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Mental multiplication worksheet
Work these questions out in your head and discuss them with your group.
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1. |
439 x 10 = |
7. |
25 x 9 = |
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2. |
2 x 18 x 5 = |
8. |
32 x 50 = |
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3. |
4 x 36 x 5 = |
9. |
32 x 52 = |
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4. |
102 x 21 = |
10. |
75 x 6 = |
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5. |
999 x 6 = |
11. |
8 x 17 = |
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6. |
25 x 8 = |
12. |
11 x 43 = |
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13. |
Esther
knows that 8 x 125 = 1000. How can she easily work out 24 x 125? |
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14. |
Paula
just worked out that 13 x 7 x 11 = 1 001. How can she easily
work out 26 x 7 x 33? |
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15. |
Adam
knows that 15 x 15 = 225 and 30 x 30 = 900. How can he easily
work out 900 ÷
225? |
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16. |
Lee knows that 210 = 1 024. How can he easily work out 212 ? |