計算下面各題,能簡算的要簡算. 125×9.3×0.08 | 13.7×102-2×13.7 |
(6.7+6.7+6.7+6.7)×2.5 | 4.5÷[(27.8-25.3)×0.4] |
0.096÷0.01+(75-28÷112) | 90.8-(7.03-2.17)×4.5. |
(1)125×9.3×0.08,
=125×0.08×9.3,
=10×9.3,
=93;
(2)13.7×102-2×13.7,
=13.7×(102-2),
=13.7×100,
=1370;
(3)(6.7+6.7+6.7+6.7)×2.5,
=6.7×4×2.5,
=6.7×(4×2.5),
=6.7×10,
=67;
(4)4.5÷[(27.8-25.3)×0.4],
=4.5÷[2.5×0.4],
=4.5÷1,
=4.5;
(5)0.096÷0.01+(75-28÷112),
=0.096÷0.01+(75-0.25),
=0.096÷0.01+74.75,
=9.6+74.75,
=84.35;
(6)90.8-(7.03-2.17)×4.5,
=90.8-4.86×4.5,
=90.8-21.87,
=68.93.
練習冊系列答案
相關習題
科目:小學數(shù)學
來源:不詳
題型:解答題
算一算,能簡算的要簡算. (1)5.42×99 | (2)1.43×2.5+0.57×2.5 |
(3)0.93÷0.6÷0.5 | (4)6.8×25+0.32×4.2-8÷25. |
查看答案和解析>>
科目:小學數(shù)學
來源:不詳
題型:解答題
列式計算:
(1)已知一個數(shù)是56.3,比另一個數(shù)多2.3,另一個數(shù)是多少?
(2)甲數(shù)是3.72,比乙數(shù)少0.5,甲、乙兩數(shù)的和是多少?
查看答案和解析>>
科目:小學數(shù)學
來源:不詳
題型:解答題
列式計算.
(1)8個4.05比40少多少?
(2)0.5除4.2的商減去5.1,差是多少?
查看答案和解析>>
科目:小學數(shù)學
來源:不詳
題型:解答題
一個數(shù)的5倍與1l.一3的和是11l.一3,這個數(shù)是多少?
查看答案和解析>>