①
②
③
④
=
÷5%=
10%×5=
1÷25%=
- = 2.4× = 56÷ = 0× = 2×20%=
15× = ÷7= 7- = 1÷ = 10÷10%=
6.28-5.64+3.72-4.36 × - 0.4× +
10-
①(﹣)×÷
②×0.375+÷
③23﹣×÷
④(×)×3×8