Unit 1 Mid-Unit Assessment Review

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another. It shows how many are left after some are taken away.

Front

What is the result of 12 - 8?

Back

4

Front

How can you show your work for 12 - 8?

Back

You can draw 12 objects and cross out 8 to see that 4 are left.

Front

What is 9 - 3?

Back

6

Front

If there are 16 animals on a farm and 8 are horses, how many are pigs?

Back

8 pigs

Front

Write an equation to find the number of pigs if there are 16 animals and 8 are horses.

Back

16 - 8 = 8

Front

What is a 'doubles fact' in addition?

Back

A doubles fact is when you add a number to itself, like 7 + 7.

Front

What doubles fact can help solve 7 + 8?

Back

7 + 7 can help because it equals 14, and then you add 1 more to get 15.

Front

What is the equation to make a ten for 16 - 9?

Back

16 - 6 = 10 and then 10 - 3 = 7.

Front

What is the term for the answer in subtraction?

Back

The answer in subtraction is called the 'difference'.