W.A.L.T. solve Addition & Subtraction problems using various strategies
Problem
|
Strategie
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Answer
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4563+9997=
|
4000 + 9000=13000
500 + 900=1400
60 + 90=150
3 + 7=10
13000 + 1400 + 150 + 10=
10000 + 1000 + 100 + 10
=11110+3000+400+50
=14560
|
14560
|
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