题目内容
脱式计算。
(1)6.84×8.5-31.46÷0.55
(2)0.8× [3.75-(2.35+0.25÷0.25)]
(1)6.84×8.5-31.46÷0.55
(2)0.8× [3.75-(2.35+0.25÷0.25)]
(1)原式=58.14-57.2
=0.94
(2)原式=0.8× [3.75-(2.35+1)]
=0.8×(3.75-3.35)
=0.32
=0.94
(2)原式=0.8× [3.75-(2.35+1)]
=0.8×(3.75-3.35)
=0.32
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