①657÷9=
②564÷7=
③654÷6=
④368÷7=
⑤*482÷3=
⑥*625÷6=
47+38=
90-74=
786-423=
480+420=
63×2=
500×6=
225×0=
130+33×2=
347+102≈
503×4≈
+=
1--=
7.3+1.7=
7.51+4.9=
4.7+3.8=
7+3.8=
5.6+3=
5.6+0.4=
8.5-2.9=
2-0.01=
4.2-3.5=
4.8-4=
7.6+2.5=
1.74+3.2=
3.8+4.02=
6.3+2.2=
6.26-3.6=
3.42+0.48=
9.37-6.5=
3.65+1.35=
1.25+0.8=
4.04+3.5=
1.76+2.8=
4.8-4.3=
8.26+7.2=
0.24+5.2=
0.8+0.02=
6.5-3.9=
4.4-3.6=
4.6+3=
4.4-3.9=
0.89+2.73=
48÷4=
验算
83×282×3 980克1千克
5000克5千克 720÷8720÷9