Question

10.16×15−21.5×4.6的简便运算方式？

Answer 1

好像只能先算乘法，再算减法。
10.16×15−21.5×4.6
=152.4-98.9
=53.5

Answer 2

=（10.16*3-4.3*4.6）*5
=（5.08*3-4.3*2.3）*5*2
=（15.24-9.89）*10
=5.35*10
=53.5

Answer 3

10.16×15−21.5×4.6
=5.08X2X15-21.5X2X2.3
=5.08X30-43X2-43X0.3
=152.4-86-12.9
=152.4-98.9
=152.4-100+1.1
=53.5