Envision Topic 6

Front

What is subtraction?

Back

Subtraction is taking away a number from another number. For example, if you have 5 apples and you give away 2, you have 3 apples left.

Front

What is addition?

Back

Addition is putting together two or more numbers to find a total. For example, if you have 3 oranges and you get 2 more, you have 5 oranges in total.

Front

What does the ones place in a number represent?

Back

The ones place is the rightmost digit in a number, representing how many single units are in that number.

Front

How do you check your subtraction answer?

Back

You can check your subtraction answer by using addition. For example, if you subtract 39 from 52, you can add the result to 39 to see if you get back to 52.

Front

If you have 70 beads and 11 are purple, how do you find the number of blue beads?

Back

You subtract the number of purple beads from the total number of beads: 70 - 11 = 59 blue beads.

Front

What is a two-step problem?

Back

A two-step problem requires you to perform two operations to find the answer. For example, first subtract and then add.

Front

What is the result of 52 - 39?

Back

The result is 13.

Front

If James eats 21 berries from 36, how many are left before he adds more?

Back

There are 15 berries left before he adds more.

Front

What is the total number of berries after James adds 14 more?

Back

The total number of berries is 29.

Front

What is the equation to check if 13 + 39 = 52 is correct?

Back

You can check by subtracting: 52 - 39 = 13.