
Chuyên đề bồi dưỡng HSG toán 3 2016 - 2017
Page 1
Dạng 1: Tính nhanh (Rút thừa số chung) 1. 24 x 5 + 24 x 3 + 24 x 2
........................................................................ ........................................................................ ........................................................................ 2. 24 x 5 + 24 x 4 + 24
........................................................................ ........................................................................ ........................................................................ 3. 217 x 45 + 50 x 217 + 207 x 5
........................................................................ ........................................................................ ........................................................................ 4. 9 + 9 x 3 + 18 : 2 x 6
........................................................................ ........................................................................ ........................................................................ 5. 3 x 9 + 18 x 2 + 2 x 9 + 9
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6. 64 x 4 + 18 x 4 + 9 x 8
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7. 44 x 5 + 18 x 10 + 20 x 5
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8. 3 x 4 + 4 x 6 + 9 x 2 + 18
........................................................................ ........................................................................ ........................................................................ 9. 2 x 5 + 5 x 7 + 9 x 3
........................................................................ ........................................................................ ........................................................................ 10. 15 : 5 + 27 : 5 + 8 : 5
........................................................................ ........................................................................ ........................................................................ 11. 99 : 5 - 26 : 5 - 14 : 5
........................................................................ ........................................................................ ........................................................................ 12. 2006 x ( 43 x 10 - 2 x 43 x 5) + 100
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13. (16 x 6+ 16 x3 + 16) - (12 x 65 + 12 x 3 + 2 x12)
............................................................................................................................................................ ............................................................................................................................................................ ............................................................................................................................................................ 14. (16 x 6+ 16 x3 + 16) - 12 x 65 - 12 x 3 - 2 x12
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