Addition
22+20
44
12-10
2
45 ___ 54
<
100+10+1
111
5, 10, 15, 20
25
100+17
117
25-10
15
9 tens___90
=
500+80+4
584
20, 30, 40, 50
60
25+40
65
50-25
25
75___73
>
4+60+200
264
25, 50, 75,
100
10+20+4
34
88-56
32
1 hundred___200
<
90+300+7
397
135, 140, 145,
150
65+24
89
100-80
20
800___80
>
404
900, 800, 700, 600,
500