| 简便运算. 17.15-8.47-1.53 (
187.7×11-187.7 0.48×100.1. |
| (1)17.15-8.47-1.53, =17.15-(8.47+1.53), =17.15-10, =7.15; (2)(
=
=66+28+15, =94+15, =109; (3)187.7×11-187.7, =187.7×(11-1), =187.7×10, =1877; (4)0.48×100.1, =0.48×(100+0.1), =0.48×100+0.48×0.1, =48+0.048, =48.048. |
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