Envision 2nd grade Topic 5

Front

What is compensation in subtraction?

Back

Compensation is a strategy where you adjust one number to make the math easier, then adjust the other number to keep the equation balanced.

Tags

CCSS.2.OA.B.2

CCSS.1.OA.C.6

Front

How do you use an open number line to solve subtraction problems?

Back

An open number line helps you visualize the numbers and the distance between them. You can jump back from the starting number to find the answer.

Tags

CCSS.1.OA.A.1

Front

If there are 77 passengers on a bus and 47 get off, how do you find out how many are left?

Back

You subtract the number of passengers that got off (47) from the total number of passengers (77). 77 - 47 = 30.

Tags

CCSS.2.OA.A.1

Front

What is the result of 52 - 18?

Back

34

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the result of 78 - 50?

Back

28

Tags

CCSS.2.NBT.B.5

Front

What is the result of 78 - 52?

Back

26

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

How do you use a Hundreds Chart to solve subtraction problems?

Back

A Hundreds Chart helps you see the numbers in a grid. You can count backwards to find the answer.

Tags

CCSS.4.NBT.B.4

Front

What is 89 - 30?

Back

59

Tags

CCSS.2.NBT.B.5

Front

What does it mean to find the difference in subtraction?

Back

Finding the difference means calculating how much one number is less than another.

Tags

CCSS.1.OA.A.1

Front

What is the first step in solving a subtraction problem?

Back

Identify the larger number and the smaller number.

Tags

CCSS.1.OA.A.1