300+270=
210+650=
1000-750=
620-490=
898-289≈
477+359≈
1-= += -= += -=
300×5= 120+340= 151×0= 3×32= 570-260=
8.4+0.7=
3.2+1.8=
3.6+1.6=
3.8-3.7=
0.9+0.6=
7.5-0.5=
2.2-1.9=
0.1-0.1=
3.7-0.9=
6.3+7.7=
12-0.12=
2.13-0.02=
1.8-0.9=
1-0.3=
3.5+0.2=
7.7+4.3=
3.2-2.3=
1.2+0.3=
6.3-4.6=
0.76-0.38=
1.12-1.02=
9.2+7.8=
7.3-2.5=
4.5-0.1=
5.6+7.4=
2.1+0.2=
1.35-0.65=
6.9+2.3=
0.3+0.7=
9.3-8.3=