0.4+8.7= 4.5+3.6= 0.28+0.54= 1.4-0.9=
7.1-3.5= 5-2.7= 5.1-1.49= 15.3-4.8=
+=
1-=
1.25-=
24÷18=
19÷38=
+1.125=
-=
66×3÷66×3=
0.88+0.2= 3.85-1.76= 1÷0.1-1×0.1=
0.8×0.125= 2.5×(4+0.4)= 1÷1.25=
2.5+7.5÷10= 11.96÷12≈ (凑整到百分位)
÷ = + = - = 2÷ = 1-70%=
3.14×6= 100÷12.5= 0.16÷0.4= 14÷35= 5×40%=
+ = 1- = + =
- = - = - =
33=
0.5+=
-0.5=
上图中A点表示,以它为分数单位往下数,数到B点是;再接着数到C点是,将C点化成带分数是。
0.125×8= 4.5÷5= 3.55+2.45= 6297÷9≈
299×7≈