Addition and Subtraction Review

Front

What is the result of 43 - 26?

Back

17

Front

What is Partial-Sums Addition for 667 + 309?

Back

976

Front

Estimate the sum of 124 + 59 (not exact).

Back

180

Front

What is the result of 27 + 59?

Back

86

Front

Estimate the difference of 126 - 81 (not exact).

Back

50

Front

What is the definition of addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Front

What is the definition of subtraction?

Back

Subtraction is the process of finding the difference between two numbers by removing one from the other.

Front

What does it mean to estimate in math?

Back

Estimating means finding a number that is close to the exact answer, often by rounding.

Front

What is a mental math strategy?

Back

Mental math strategies are techniques used to perform calculations in your head without writing them down.

Front

What is the commutative property of addition?

Back

The commutative property states that changing the order of the numbers in addition does not change the sum.