Problem
|
Strategy
|
Answer
|
1.551+351=
|
500+300=800
50+50=100
1+1=2
800+100+2=902
|
902
|
2.154+992=
|
100+900=1000
50+90=140
4+2=6
1000+140+6=1146
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1146
|
3.3798+2545=
|
3000+2000=5000
700+500=1200
90+40=130
8+5=13
5000+1200+130+13=6343
|
6343
|
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