Question

2.43乘6.12加0.388乘24点三的简便运算？

Answer 1

解:2.43X6.12+0.388ⅹ24
=(2.4+0.O3)ⅹ6.12+3.88X2.4
=2.4ⅹ6.12+3.88X2.4+6.12X0.03
=2.4ⅹ(6.12+3.88)+0.1836
=2.4ⅹ10+0.1836
=24+0.1836
=24.1836

Answer 2

2.43×6.12+0.388×24.3
=24.3×0.612+24.3×0.388
=2.43×（0.612+0.388）
=24.3×1
=24.3

Answer 3

2.43×6.12+0.388×24.3，因为2.43×6.12=24.3×0.612所以原式等于乘以24.3×0.612+24.3×0.388运用乘法分配律逆运算有24.3×（0.612+0.388）=24.3

Answer 4

结果是24.3 。
2.43×6.12+0.388×24.3
=2.43×6.12+2.43×3.88
=2.43×(6.12+3.88)
=2.43×10
=24.3

Answer 5

在乘法算式中，一个因数扩大几倍，另一个因数缩小相应的倍数，积不变。
2.43×6.12+0.388×24.3
=2.43×6.12+3.88×0.1×24.3
=2.43×(6.12+3.88)
=2.43×10
=24.3