80+60= 300+80= 400+500= 5300-5000=
170-90= 230-60= 70+800= 400+3000=
40+360= 190+80= 5000-4000= 1200-600=
120-50= 400-40= 1300-700= 3000+5000=
35+69=
52-6=
47+35=
76-58=
24÷6=
7×8=
27÷9=
8×5=
35÷5=
36÷6=
42÷6=
19÷5=
1.25×80%= = 1﹣0.375= 6÷0.2=
= 2.35+4.7= = 16×0.25=
= =