提升点②综合运用折扣和成数解决实际问题
①x-x=2
②=6:x
x:=0.5: = 0.2x-1.5=
32.7-5.3-3.7 125×23-15×125 25×11×1.6
(-+)×18 (-)×7-28÷29 ×3.7+0.56×1.25-×12.5%
列式:
口诀:
803-207= ÷5= 798+150= + =
0.25×8= 1.5- = 7.5÷ = 0.77+0.3=
9.8-8= × = 45.54÷45= 24× =