题目内容
脱式计算,能简算的要简算。
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| (1)原式=15.3+4.7+(0.86+0.14) =20+1 =21 |
(2)原式 =365×(100-1) =36500-365 =36135 |
(3)原式=125×8×8 =8000 |
| (4)原式=0.25×4×11 =11 |
(5)原式=19.6÷(2×5) =1.96 |
(6)原式=4×2.5×2.73 =27.3 |
| (7)原式=13.5+15-10+0.25 =13.5+5+0.25 =18.75 |
(8)原式=(800-40)×25 =20000-1000 =19000 |
(9)原式=176-19+66 =176-20+1+66 =223 |
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