递等式计算。(能简算的要简算)
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| (1)原式=8.3+1.7+6.2 =16.2 | (2)原式=96×8+4×8 =(96+4)×8 =800 | (3)原式=73.26-3.26-18.9 =70-18.9 =51.1 |
| (4)原式=25×4×87 =8700 | (5)原式=125×8+4×8 =1032 | (6)原式=21.4+4.6-(15.32+4.68) =26-20 =6 |
| (7)原式=6.75-(2.9+3.1) =0.75 | (8)原式=25×4×25×4 =10000 | (9)原式=125×(860+20) =125×8×110 =110000 |
| (10)原式=23.61-3.61+5.7 =25.7 | (11)原式= 45×(37+73-10) = 4500 |