math unit 4 mastery

Front

What is the sum of 43 + 9?

Back

52

Front

Is the sum of 67 + 7 equal to 73?

Back

No

Front

Is the sum of 40 + 30 equal to 73?

Back

No

Front

If Doug has 39 dimes and Lisa has 13 more dimes than Doug, how many dimes does Lisa have?

Back

52

Front

What is the best estimate for the sum of 35 + 14 using partial sums?

Back

50

Front

What is addition?

Back

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

Front

What is a sum?

Back

A sum is the result of adding two or more numbers together.

Front

What does it mean to estimate a sum?

Back

Estimating a sum means finding a close value to the actual sum without calculating it exactly.

Front

What is a partial sum?

Back

A partial sum is the sum of a part of a set of numbers, often used to simplify addition.

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.