5× =35 64 ÷=8 × 5=10 7×=63
48-=6 ÷4=9 54 ÷=6 ×4=32
①465+338=
②224+176=
③*759+144=
④632-411=
⑤413-278=
⑥*601-315=
1250980 34954120 67216801 10 个一千10000
0.2×45= 3﹣= 10×25%= 32×0×3.08=
+= 0.5+= = (120﹣70)÷=