Unit 3 Lesson 19

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another. It shows how much is left after something is taken away.

Front

What does the equation 205 - 40 - 60 = N represent?

Back

This equation represents a subtraction problem where you start with 205 and subtract 40 and then 60 to find the value of N.

Front

What is the result of 205 - 40 - 60?

Back

The result is 105.

Front

What is a tape diagram?

Back

A tape diagram is a visual representation of a mathematical problem that uses rectangles to show parts of a whole.

Front

What does the equation ? + 7 x 7 = 444 mean?

Back

This equation means that if you add 7 times 7 to an unknown number (?), you will get 444.

Front

What is multiplication?

Back

Multiplication is a mathematical operation where a number is added to itself a certain number of times.

Front

What does the equation 6 x 6 + N = 218 represent?

Back

This equation shows that if you multiply 6 by 6 and then add N, the total will be 218.

Front

What is the value of N in the equation 6 x 6 + N = 218?

Back

N is 82, because 6 x 6 = 36 and 36 + 82 = 218.

Front

What is a word problem?

Back

A word problem is a mathematical problem that is presented in the form of a story or real-life situation.

Front

What does the equation 4 x _ = 0 mean?

Back

This equation means that when you multiply 4 by an unknown number (_), the result is 0.