add
what is 200+500
it is 700
10 +10=
10+10+20
1+1
2
100+100
200
1,000+1,000
2,000
what is 500+800
it is 1,300
20+20=
20+20=40
2+2
4
200+200
400
2,000+2,000
4,000
what is 1,000+800
1,000+800=1,800
30+30=
30+30=60
3+3
6
300+300
600
3,000+3,000
6,000
what is 3,000+3,000
3,000+3,000=6,000
40+40=
40+40=80
4+4
8
400+400
800
4,000+4,000
8,000
what is 1,000+1,000
1,000+1,000=2,000
50+50=
50+50=100
5+5
10
500+500
1,000
5,000+5,000
10,000