简便计算1200-397578+29816÷2.595.6×1.8+0.44×1810.47-3.4+6.67.28-8
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/09/28 15:32:51
简便计算
1200-397
578+298
16÷2.5
95.6×1.8+0.44×18
10.47-3.4+6.6
7.28-8分之3+4.72-8分之5
2.5×32×125%
1200-397
578+298
16÷2.5
95.6×1.8+0.44×18
10.47-3.4+6.6
7.28-8分之3+4.72-8分之5
2.5×32×125%
1200-397 = 1200 - 400 +3 = 803
578+298 = 578 + 300 -2 =876
16÷2.5 = 16×4 ÷(2.5÷4)= 6.4
95.6×1.8+0.44×18 = 95.6× 1.8 +4.4 ×1.8 = (95.6 + 4.4)×1.8 = 180
10.47-3.4+6.6 = 7.07 + 6.6 = 13.67 (不能简算)
7.28-8分之3+4.72-8分之5 =(7.28 + 4.72)-(3/8 + 5/8)=12 - 1 = 11
2.5×32×125% = 2.5× 4 ×(125%×8)= 10 × 10 = 100
578+298 = 578 + 300 -2 =876
16÷2.5 = 16×4 ÷(2.5÷4)= 6.4
95.6×1.8+0.44×18 = 95.6× 1.8 +4.4 ×1.8 = (95.6 + 4.4)×1.8 = 180
10.47-3.4+6.6 = 7.07 + 6.6 = 13.67 (不能简算)
7.28-8分之3+4.72-8分之5 =(7.28 + 4.72)-(3/8 + 5/8)=12 - 1 = 11
2.5×32×125% = 2.5× 4 ×(125%×8)= 10 × 10 = 100
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