2.5乘小括号3.7×0.04脱式计算能简算的要简算
脱式计算,能简算的要简算2.37×6.3+2.37×3.72.5×1.25×0.323.8×10.1920-1680÷(40×7)...
脱式计算,能简算的要简算
2.37×6.3+2.37×3.7
2.5×1.25×0.32
3.8×10.1
920-1680÷(40×7) 展开
2.37×6.3+2.37×3.7
2.5×1.25×0.32
3.8×10.1
920-1680÷(40×7) 展开
1个回答
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(1)2.37×6.3+2.37×3.7
=2.37×(6.3+3.7)
=2.37×10
=23.7
(2)2.5×1.25×0.32
=2.5×1.25×0.04×8
=(2.5×0.04)×(1.25×8)
=0.1×10
=1
(3)3.8×10.1
=3.8×(10+0.1)
=3.8×10+0.38
=38+0.38
=38.38
(4)920-1680÷(40×7)
=920-1680÷280
=920-6
=914
=2.37×(6.3+3.7)
=2.37×10
=23.7
(2)2.5×1.25×0.32
=2.5×1.25×0.04×8
=(2.5×0.04)×(1.25×8)
=0.1×10
=1
(3)3.8×10.1
=3.8×(10+0.1)
=3.8×10+0.38
=38+0.38
=38.38
(4)920-1680÷(40×7)
=920-1680÷280
=920-6
=914
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