Subtracting Two-Digit Numbers With Renaming
Understanding exponents as repeated multiplication and evaluating expressions involving powers.
Key Questions
- What do you do when the units digit you are subtracting is bigger than the one you have?
- How does renaming (borrowing) a ten help you subtract?
- Can you solve subtraction problems like 63 − 28 using renaming and check your answer?
NCCA Curriculum Specifications
Suggested Methodologies
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