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能用简便方法的用简便方法计算32+4.9-0.94.8-4.8×0.5(1.25-0.12能用简便方法的用简便方法计算32+4.9-0.94.8-4.8×0.5(1.25-0.125)×84.8×100.156.5×99+56.57.09×10.8-0.8×7.09.

题目详情
能用简便方法的用简便方法计算 32+4.9-0.94.8-4.8×0.5(1.25-0.12
能用简便方法的用简便方法计算
32+4.9-0.94.8-4.8×0.5(1.25-0.125)×8
4.8×100.156.5×99+56.57.09×10.8-0.8×7.09.

▼优质解答
答案和解析
(1)32+4.9-0.9
=32+(4.9-0.9)
=32+4
=36;

(2)4.8-4.8×0.5
=4.8×(1-0.5)
=4.8×0.5
=2.4;

(3)(1.25-0.125)×8
=1.25×8-0.125×8
=10-1
=9;

(4)4.8×100.1
=4.8×(100+0.1)
=4.8×100+4.8×0.1
=480+0.48
=480.48;

(5)56.5×99+56.5
=56.5×(99+1)
=56.5×100
=5650;

(6)7.09×10.8-0.8×7.09
=7.09×(10.8-0.8)
=7.09×10
=70.9.