Walt:we are learning addition

 Walt:we are learning addition
1.1257+6273
1000+6000=7000
200+200=400
50+70=120
7+3=10

7000+400+120+10=7530

2. 2314+4361=
2000+4000=6000
300+300=600
10+60=70
4+1=5
6000+600+70+5=6675

3.234 -334=100
200-300=100
30-30=0
4-4=0

4.248-782=546
200-700=500
40 -80=40
8-2=6
500-40-6=546