共30题用时5分钟

1+0.1=

7.6×8＋2.4×8＝

0.3+0.7=

0.4+0.42=

1.25×5×8＝

1-0.5=

0.9-0.89=

9.7-2=

3.5+0.5=

5-0.64=

42.8-4.28=

6.3+7=

0.27－0.2＝

1÷0.25×4＝

2.5×4＝

1.2×0.5＝

7.2＋2.8＝

42.9÷6＝

0.3÷0.1＝

1÷0.5＝

1.4×11＝

3.07×100＝

0.53÷0.5＝

0.36÷0.6＝

4.5×2=

6.9－2.5=

7.2×0.8=

6×3.4=

4.7+2.3=

0.62－0.32=