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Subject:
Subtraction Strategies
Round Numbers: Subtraction Practice
Rounding: Magical Math!
Subtract One Strategy: Subtracting with Zeros
Mixed Problems Requiring Estimation
Using Estimation: Knowing What’s Too Big and Too Small
Speedy Rounding and Subtracting 2
Rounding Numbers: Subtraction
Speedy Rounding and Subtracting 8
Speedy Rounding and Subtracting 7
Speedy Rounding and Subtracting 6
Speedy Rounding and Subtracting 5
Speedy Rounding and Subtracting 4
Speedy Rounding and Subtracting 3
Speedy Rounding and Subtracting 10
Speedy Rounding and Subtracting 9
Practice Front-End Estimation
Thermometer Subtraction
Thermometer Addition
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