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Question
Circle the correct subtraction fact (by using casting out nine).
7420 − 3625 = 3795
Solution
7420 – 3625 = 3795
7420 – 3625 = 3795
4 – 7 = 15
4 = 15 + 7
4 = 6 + 7
4 = 13
4 = 4
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Now try doing it with some other number and also take a different number to add at each step.
Look at the numbers below. Look for the pattern. Can you take it forward?
