脱式计算.8.9×5.2+9.31.4×[(7.5+38.4)÷0.9]9.4×8.4+5.81.3×2.2-0.20.
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/04/29 03:09:28
脱式计算.
8.9×5.2+9.3 | 1.4×[(7.5+38.4)÷0.9] | 9.4×8.4+5.8 |
1.3×2.2-0.2 | 0.9+8.3×8.3 | 30.1÷[(6.07+2.53)×0.7]. |
(1)8.9×5.2+9.3
=46.28+9.3
=55.58
(2)1.4×[(7.5+38.4)÷0.9]
=1.4×[45.9÷0.9]
=1.4×51
=71.4
(3)9.4×8.4+5.8
=78.96+5.8
=84.76
(4)1.3×2.2-0.2
=2.86-0.2
=2.66
(5)0.9+8.3×8.3
=0.9+68.89
=69.79
(6)30.1÷[(6.07+2.53)×0.7]
=30.1÷[8.6×0.7]
=30.1÷6.02
=5
=46.28+9.3
=55.58
(2)1.4×[(7.5+38.4)÷0.9]
=1.4×[45.9÷0.9]
=1.4×51
=71.4
(3)9.4×8.4+5.8
=78.96+5.8
=84.76
(4)1.3×2.2-0.2
=2.86-0.2
=2.66
(5)0.9+8.3×8.3
=0.9+68.89
=69.79
(6)30.1÷[(6.07+2.53)×0.7]
=30.1÷[8.6×0.7]
=30.1÷6.02
=5
脱式计算.8.9×5.2+9.31.4×[(7.5+38.4)÷0.9]9.4×8.4+5.81.3×2.2-0.20.
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