Question

15.8×0.12÷7.9+3.8的简便方法？

Answer 1

15.8×0.12÷7.9+3.8的简便方法？

解：根据已知条件，列式进行计算：    

15.8×0.12÷7.9+3.8

=15.8÷7.9×0.12+3.8

=2x0.12+3.8

=0.24+3.8

=4.04

Answer 2

因为，根据四则运算计算法则，本题要先算乘除法，再算加法，本题乘除法是连续计算，因此，可以调整乘除法的运算顺序，计算结果不变。
解：
15.8×0.12÷7.9+3.8
=15.8÷7.9×0.12+3.8
=2×0.12+3.8
=0.24+3.8
=4.04

Answer 3

15.8×0.12÷7.9+3.8=15.8×(0.1+0.02)÷(8－0.1)+3.8=(1.58+0.316）÷7.9+3.8=0.24+3.8=4.04

Answer 4

简便计算如下
15.8×0.12÷7.9+3.8
=15.8÷7.9×0.12+3.8
=2×0.12+3.8
=0.24+3.8
=4.04

Answer 5

15.8×0.12÷7.9+3.8
＝15.9÷7.9x0.12十3.8
＝2x0.12十3.8
＝0.24十3.8
＝4.08