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Missing Numbers in Subtraction. Mrs. Carter 4 th Grade. There are 2 ways to find missing numbers in subtraction: Subtract Down Add Up. Subtract Down. Subtract Down when you are missing a number on the bottom. 56 6 minus what number is 4?
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Missing Numbers in Subtraction Mrs. Carter 4th Grade
There are 2 ways to find missing numbers in subtraction: Subtract Down Add Up
Subtract Down Subtract Down when you are missing a number on the bottom. 56 6 minus what number is 4? W 5 minus what number is 1? 14
Add Up Add up when you are missing a number on the top. N three plus six is nine • 36 four plus three is seven 43
Practice: Use your white board to practice. • 36 – p =21 • 47 – Q = 24 • M – 22 = 16 • W – 32 = 43 • 43 – X = 32