①324×9=
②507×3=
③460×5=
④▲235+497=
⑤▲900-454=
49+71= 700×6= 100-24= 45÷5×9= 901×2≈
+= += 1-= 24+15×0= 396×7≈
0.7+0.9=
0.8-0.55=
1.7+2.3=
4.1-3.8=
6-0.04=
8.6-5.3=
14+0.78=
1-0.03=
0.7+2.5=
0.9-0.55=
3.5+4.2=
0.3+3.2=
4-0.04=
0.8-0.45=
4.0-2.8=
0.8+0.6=
0.78+2.2=
1.1+2.5=
14.6-0.34=
10-0.1=
6.3-4.8=
1-0.07=
5-0.08=
3.2-1.9=
8.24+3.76=
3.2+7.5=
0.7+2.3=
1.3+5.5=
4.3+2.1=
3.6+1.8=
①960﹣480
②456+293
③406×9
④237×6
⑤720×5
⑥★805﹣346
①84÷5=
②※426÷3=
③283÷6 =
④327÷3=
⑤※762÷4=
⑥910÷7 =
①28×3=
②4×112=
③340×5=
④263×2=
⑤207×9=
⑥969×7=