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脱式计算,能简算的要简算(16.5×3+22.5)÷629.7-(6.2+0.85)×43.61÷(7.2-5.3)×301÷0.25×(1.28÷3.2)3-7.14÷3.5×1.050.72×1.25×0.8.
题目详情
脱式计算,能简算的要简算
(16.5×3+22.5)÷6
29.7-(6.2+0.85)×4
3.61÷(7.2-5.3)×30
1÷0.25×(1.28÷3.2)
3-7.14÷3.5×1.05
0.72×1.25×0.8.
(16.5×3+22.5)÷6
29.7-(6.2+0.85)×4
3.61÷(7.2-5.3)×30
1÷0.25×(1.28÷3.2)
3-7.14÷3.5×1.05
0.72×1.25×0.8.
▼优质解答
答案和解析
(1)(16.5×3+22.5)÷6
=(49.5+22.5)÷6
=72÷6
=12;
(2)29.7-(6.2+0.85)×4
=29.7-7.05×4
=29.7-28.2
=1.5;
(3)3.61÷(7.2-5.3)×30
=3.61÷1.9×30
=1.9×30
=57;
(4)1÷0.25×(1.28÷3.2)
=1÷0.25×0.4
=4×0.4
=1.6;
(5)3-7.14÷3.5×1.05
=3-2.04×1.05
=3-2.142
=0.858;
(6)0.72×1.25×0.8
=0.72×(1.25×0.8)
=0.72×1
=0.72.
=(49.5+22.5)÷6
=72÷6
=12;
(2)29.7-(6.2+0.85)×4
=29.7-7.05×4
=29.7-28.2
=1.5;
(3)3.61÷(7.2-5.3)×30
=3.61÷1.9×30
=1.9×30
=57;
(4)1÷0.25×(1.28÷3.2)
=1÷0.25×0.4
=4×0.4
=1.6;
(5)3-7.14÷3.5×1.05
=3-2.04×1.05
=3-2.142
=0.858;
(6)0.72×1.25×0.8
=0.72×(1.25×0.8)
=0.72×1
=0.72.
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