Addition
40+70=
110
40-70=
30
15x3=
45
15 divided by 3
5
3/9 + 8/9=
1 2/9
460+620
1,080
620-460=
160
45x2=
90
20 divided by 10
2
7/5-1/5=
1 1/5
450+760=
1,210
760-450=
310
60x10=
600
18 divided by 6
3
2/4 x 3/4=
1 2/4 or 1 1/2
2,660+3,055=
5,715
3,055-2660
395
90x9=
810
32 divided by 2
16
3/10 x 9/10=
1 2/10 or 1 1/5
10,880+68,950=
79,830
68,950-10,880=
58,070
5,100x10
51,000
68 divided by 34
2
9/10 x 5/10
4 5/10 or 4 1/2