Mike Jacobs

Use 9 different integers in a 3 by 3 grid. The numbers in the top row multiply to -90. The numbers in the middle row multiply to -209. The numbers in the bottom row multiply to -189. The numbers in the left column multiply to 231. The numbers in the middle column multiply to 135. The numbers in the right column multiply to -114. The sum of the integers in the 2 by 2 square at the top left of the grid is -2.

Try this shady #yohaku. Fill in cells with 9 different integers to get products shown in each row/column AND sum of 4 shaded cells is -2. #mathsky #iTeachMath

Use 9 different factors of 390 in a 3 by 3 grid. The numbers in the top row add to 20. The numbers in the middle row add to 58. The numbers in the bottom row add to 76. The numbers in the left column add to 22. The numbers in the middle column add to 51. The numbers in the right column add to 81.

Start your day with this #yohaku. Fill in cells with 9 different factors of 390 to get totals shown in each row/column. #mathsky #iTeachMath

Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 70. The numbers in the middle row multiply to 78. The numbers in the bottom row multiply to 144. The numbers in the left column multiply to 126. The numbers in the middle column multiply to 60. The numbers in the right column multiply to 104.

"Start your day with this #yohaku. Fill in cells with 9 different whole numbers to get products shown in each row/column. More free puzzles and books/ebooks for all ages can be found at yohaku.ca

Use 9 different factors of 490 in a 3 by 3 grid. The numbers in the top row add to 17. The numbers in the middle row add to 82. The numbers in the bottom row add to 143. The numbers in the left column add to 17. The numbers in the middle column add to 182. The numbers in the right column add to 43.

Start your week with this #yohaku. Fill in cells with 9 different factors of 490 to get totals shown in each row/column. #mathsky #iTeachMath

Use 16 different factors of 588 in a 4 by 4 grid. The numbers in the top row add to 23. The numbers in the second row add to 316. The numbers in the third row add to 123. The numbers in the bottom row add to 756. The numbers in the left column add to 740. The numbers in the second column add to 60. The numbers in the third column add to 353. The numbers in the right column add to 65. The central four cells contain square numbers.

Here's a #yohaku to take you into the weekend. Fill in cells with 16 different factors of 588 to get totals shown in each row/column AND shaded cells contain square numbers. #mathsky #iTeachMath

Use 9 different integers in a 3 by 3 grid. The numbers in the top row multiply to -68. The numbers in the middle row multiply to -165. The numbers in the bottom row multiply to 84. The numbers in the left column multiply to -102. The numbers in the middle column multiply to -140. The numbers in the right column multiply to 66. The sum of the integers in the 2 by 2 square at the top left of the grid is -5.

Try this shady #yohaku. Fill in cells with 9 different integers to get products shown in each row/column AND sum of 4 shaded cells is -5. #mathsky #iTeachMath

Use 9 different factors of 680 in a 3 by 3 grid. The numbers in the top row add to 38. The numbers in the middle row add to 58. The numbers in the bottom row add to 142. The numbers in the left column add to 29. The numbers in the middle column add to 64. The numbers in the right column add to 145.

Start your day with this #yohaku. Fill in cells with 9 different factors of 680 to get totals shown in each row/column. #mathsky #iTeachMath

Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 104. The numbers in the middle row multiply to 72. The numbers in the bottom row multiply to 198. The numbers in the left column multiply to 104. The numbers in the middle column multiply to 27. The numbers in the right column multiply to 528.

Start your day with this #yohaku. Fill in cells with 9 different whole numbers to get products shown in each row/column. More free puzzles and books/ebooks for all ages can be found at yohaku.ca

Use 9 different factors of 140 in a 3 by 3 grid. The numbers in the top row add to 47. The numbers in the middle row add to 23. The numbers in the bottom row add to 36. The numbers in the left column add to 21. The numbers in the middle column add to 35. The numbers in the right column add to 50.

Start your week with this #yohaku. Fill in cells with 9 different factors of 140 to get totals shown in each row/column. #mathsky #iTeachMath

Use 16 different factors of 630 in a 4 by 4 grid. The numbers in the top row add to 30. The numbers in the second row add to 58. The numbers in the third row add to 43. The numbers in the bottom row add to 332. The numbers in the left column add to 44. The numbers in the second column add to 59. The numbers in the third column add to 93. The numbers in the right column add to 267. The central four cells contain prime numbers.

Here's a #yohaku to take you into the weekend. Fill in cells with 16 different factors of 630 to get totals shown in each row/column AND shaded cells contain prime numbers. #mathsky #iTeachMath

Use 9 different integers in a 3 by 3 grid. The numbers in the top row multiply to 78. The numbers in the middle row multiply to 42. The numbers in the bottom row multiply to 75. The numbers in the left column multiply to 45. The numbers in the middle column multiply to -42. The numbers in the right column multiply to -130. The sum of the integers in the 2 by 2 square at the top left of the grid is -3.

Try this shady #yohaku. Fill in cells with 9 different integers to get products shown in each row/column AND sum of 4 shaded cells is -3. #mathsky #iTeachMath

Use 9 different factors of 228 in a 3 by 3 grid. The numbers in the top row add to 33. The numbers in the middle row add to 45. The numbers in the bottom row add to 83. The numbers in the left column add to 81. The numbers in the middle column add to 17. The numbers in the right column add to 63.

Start your day with this #yohaku. Fill in cells with 9 different factors of 228 to get totals shown in each row/column. #mathsky #iTeachMath

Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 57. The numbers in the middle row multiply to 693. The numbers in the bottom row multiply to 48. The numbers in the left column multiply to 418. The numbers in the middle column multiply to 126. The numbers in the right column multiply to 36.

Start your day with this #yohaku. Fill in cells with 9 different whole numbers to get products shown in each row/column.
More free puzzles and books/ebooks for all ages can be found at yohaku.ca

Use 9 different factors of 120 in a 3 by 3 grid. The numbers in the top row add to 110. The numbers in the middle row add to 46. The numbers in the bottom row add to 63. The numbers in the left column add to 45. The numbers in the middle column add to 82. The numbers in the right column add to 92.

Start your week with this #yohaku. Fill in cells with 9 different factors of 120 to get totals shown in each row/column. #mathsky #iTeachMath

Use 16 different factors of 504 in a 4 by 4 grid. The numbers in the top row add to 20. The numbers in the second row add to 101. The numbers in the third row add to 70. The numbers in the bottom row add to 331. The numbers in the left column add to 39. The numbers in the second column add to 13. The numbers in the third column add to 309. The numbers in the right column add to 161. The central four cells contain triangle numbers.

Here's a #yohaku to take you into the weekend. Fill in cells with 16 different factors of 504 to get totals shown in each row/column AND shaded cells contain triangle numbers. #mathsky #iTeachMath

Use 9 different integers in a 3 by 3 grid. The numbers in the top row multiply to -26. The numbers in the middle row multiply to 315. The numbers in the bottom row multiply to 66. The numbers in the left column multiply to 42. The numbers in the middle column multiply to -130. The numbers in the right column multiply to 99. The sum of the integers in the 2 by 2 square at the top left of the grid is -1.

Try this shady #yohaku. Fill in cells with 9 different integers to get products shown in each row/column AND sum of 4 shaded cells is -1. #mathsky #iTeachMath

Use 9 different factors of 210 in a 3 by 3 grid. The numbers in the top row add to 22. The numbers in the middle row add to 161. The numbers in the bottom row add to 58. The numbers in the left column add to 48. The numbers in the middle column add to 64. The numbers in the right column add to 129.

Start your day with this #yohaku. Fill in cells with 9 different factors of 210 to get totals shown in each row/column. #mathsky #iTeachMath

Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 64. The numbers in the middle row multiply to 210. The numbers in the bottom row multiply to 81. The numbers in the left column multiply to 270. The numbers in the middle column multiply to 84. The numbers in the right column multiply to 48.

"Start your day with this #yohaku. Fill in cells with 9 different whole numbers to get products shown in each row/column. More free puzzles and books/ebooks for all ages can be found at yohaku.ca

Use 9 different factors of 90 in a 3 by 3 grid. The numbers in the top row add to 106. The numbers in the middle row add to 37. The numbers in the bottom row add to 14. The numbers in the left column add to 14. The numbers in the middle column add to 38. The numbers in the right column add to 105.

Start your week with this #yohaku. Fill in cells with 9 different factors of 90 to get totals shown in each row/column. #mathsky #iTeachMath

Use 16 different factors of 560 in a 4 by 4 grid. The numbers in the top row add to 52. The numbers in the second row add to 14. The numbers in the third row add to 190. The numbers in the bottom row add to 224. The numbers in the left column add to 196. The numbers in the second column add to 96. The numbers in the third column add to 36. The numbers in the right column add to 152. The central four cells contain odd numbers.

Here's a #yohaku to take you into the weekend. Fill in cells with 16 different factors of 560 to get totals shown in each row/column AND shaded cells contain odd numbers. #mathsky #iTeachMath

Use 9 different integers in a 3 by 3 grid. The numbers in the top row multiply to -102. The numbers in the middle row multiply to 42. The numbers in the bottom row multiply to 87. The numbers in the left column multiply to -42. The numbers in the middle column multiply to 153. The numbers in the right column multiply to 58. The sum of the integers in the 2 by 2 square at the top left of the grid is -1.

Try this shady #yohaku. Fill in cells with 9 different integers to get products shown in each row/column AND sum of 4 shaded cells is -1. #mathsky #iTeachMath

Use 9 different factors of 468 in a 3 by 3 grid. The numbers in the top row add to 9. The numbers in the middle row add to 38. The numbers in the bottom row add to 82. The numbers in the left column add to 79. The numbers in the middle column add to 33. The numbers in the right column add to 17.

Start your day with this #yohaku. Fill in cells with 9 different factors of 468 to get totals shown in each row/column. #mathsky #iTeachMath

Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 84. The numbers in the middle row multiply to 44. The numbers in the bottom row multiply to 540. The numbers in the left column multiply to 280. The numbers in the middle column multiply to 264. The numbers in the right column multiply to 27.

Start your day with this #yohaku. Fill in cells with 9 different whole numbers to get products shown in each row/column. More free puzzles and books/ebooks for all ages can be found at yohaku.ca

Use 9 different factors of 180 in a 3 by 3 grid. The numbers in the top row add to 138. The numbers in the middle row add to 83. The numbers in the bottom row add to 10. The numbers in the left column add to 21. The numbers in the middle column add to 70. The numbers in the right column add to 140.

Start your week with this #yohaku. Fill in cells with 9 different factors of 180 to get totals shown in each row/column. #mathsky #iTeachMath

Use 16 different factors of 540 in a 4 by 4 grid. The numbers in the top row add to 11. The numbers in the second row add to 96. The numbers in the third row add to 78. The numbers in the bottom row add to 256. The numbers in the left column add to 23. The numbers in the second column add to 46. The numbers in the third column add to 140. The numbers in the right column add to 232. The central four cells contain triangle numbers.

Here's a #yohaku to take you into the weekend. Fill in cells with 16 different factors of 540 to get totals shown in each row/column AND shaded cells contain triangle numbers. #mathsky #iTeachMath

Use 9 different integers in a 3 by 3 grid. The numbers in the top row multiply to -198. The numbers in the middle row multiply to 105. The numbers in the bottom row multiply to -75. The numbers in the left column multiply to 81. The numbers in the middle column multiply to -77. The numbers in the right column multiply to -250. The sum of the integers in the 2 by 2 square at the top left of the grid is -8.

Try this shady #yohaku. Fill in cells with 9 different integers to get products shown in each row/column AND sum of 4 shaded cells is -8. #mathsky #iTeachMath

Use 9 different factors of 280 in a 3 by 3 grid. The numbers in the top row add to 45. The numbers in the middle row add to 188. The numbers in the bottom row add to 19. The numbers in the left column add to 185. The numbers in the middle column add to 26. The numbers in the right column add to 41.

Start your day with this #yohaku. Fill in cells with 9 different factors of 280 to get totals shown in each row/column. #mathsky #iTeachMath

Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 132. The numbers in the middle row multiply to 24. The numbers in the bottom row multiply to 476. The numbers in the left column multiply to 102. The numbers in the middle column multiply to 231. The numbers in the right column multiply to 64.

"Start your day with this #yohaku. Fill in cells with 9 different whole numbers to get products shown in each row/column. More free puzzles and books/ebooks for all ages can be found at yohaku.ca

Use 9 different factors of 270 in a 3 by 3 grid. The numbers in the top row add to 37. The numbers in the middle row add to 195. The numbers in the bottom row add to 22. The numbers in the left column add to 62. The numbers in the middle column add to 183. The numbers in the right column add to 9.

Start your day with this #yohaku. Fill in cells with 9 different factors of 270 to get totals shown in each row/column. #mathsky #iTeachMath

Use 16 different factors of 560 in a 4 by 4 grid. The numbers in the top row add to 399. The numbers in the second row add to 105. The numbers in the third row add to 55. The numbers in the bottom row add to 47. The numbers in the left column add to 125. The numbers in the second column add to 97. The numbers in the third column add to 20. The numbers in the right column add to 364. The central four cells contain Fibonacci numbers.

Here's a #yohaku to take you into the weekend. Fill in cells with 16 different factors of 560 to get totals shown in each row/column AND shaded cells contain Fibonacci numbers. #mathsky #iTeachMath