Estimate Sums and Differences

What does estimate mean?

• About how much.

• Counting how much.

Tags

CCSS.3.MD.A.2

CCSS.3.OA.D.8

Fill in the blank to step 1 of the estimation plan.

__________ both numbers to the nearest ten.

• Round

• Add

• Subtract

• Count

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.NBT.B.8

Fill in the blank to step 2 of the estimation plan.

__________ the equation and ________ the numbers.

• Rewrite and stack

• Add and Subtract

• Round and give up

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

What is the estimate of 55+24?

• 80

• 79

• 90

• 89

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.6

What is the estimate of 28+33?

• 60

• 61

• 50

• 51

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.6

What is the estimate of 31-25?

• 0

• 6

• 10

• 60

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

What is the estimate of 69-27?

• 40

• 42

• 100

• 30

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

Jill took 32 minutes to complete math homework and 16 minutes to complete reading. About how many minutes did Jill use for homework altogether?

• 48 minutes

• 50 minutes

• 55 minutes

• 40 minutes

Tags

CCSS.2.NBT.B.5

CCSS.2.OA.A.1

Mr. Jones has 82 chickens. He gave Farmer Brown 23 of his chickens. About how many chickens does Mr. Jones have left?

• 80

• 20

• 60

• 100

Tags

CCSS.2.NBT.B.5

CCSS.2.OA.A.1

Round to the nearest ten.

• 
• 
• 

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3