问题
计算题
简便运算。
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答案
(1)原式=2.5×4×(7.2÷0.9)
=10×8
=80(2)原式= 4.2÷1.4×(0.34÷0.34)
=3×1
=3
(3)原式=1÷(32×0.05×0.25×0.5)
=1÷0.2
=5(4)原式=1.25×8×0.7+2.25×4×0.9
=10×0.7+9×0.9
=15.1
简便运算。
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(1)原式=2.5×4×(7.2÷0.9)
=10×8
=80(2)原式= 4.2÷1.4×(0.34÷0.34)
=3×1
=3
(3)原式=1÷(32×0.05×0.25×0.5)
=1÷0.2
=5(4)原式=1.25×8×0.7+2.25×4×0.9
=10×0.7+9×0.9
=15.1