19÷5= 25÷6 77÷9
79﹣8×7 32÷4×9 (81﹣45)÷6
39-(8+12) 42-32÷8 16+4+2
画图:
列式:
4398,4298,4198,,。
1-0.92= - = ×3.2= ÷ ×5=
3.5+4.28= × = ÷ = 99×0.9+0.9=