Addition and Subtraction within 1,000

Round 64 to the nearest ten.

• 60

• 65

• 70

• 600

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 873 to the nearest hundred.

• 900

• 950

• 800

• 850

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Use rounding or compatible numbers to estimate the sum.

21+47=

Is the sum even or odd? Write even or odd.

6+2=

Tags

CCSS.2.OA.C.3

Is the sum even or odd? Write even or odd.

1+4=

Tags

CCSS.2.OA.C.3

What is the sum?

47 + 26 + 34 =

• 107

• 110

• 105

• 108

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

What strategies can you use to estimate the sum of two numbers? Mark ALL that apply.

• friendly numbers

• break apart

• number line

• place value

Tags

CCSS.2.NBT.B.5

Estimate 891 - 318 = ?

Estimate. 580 - 423 = ?

• 600 - 400 = 200

• 600 - 450 = 150

• 500 - 400 = 100

Estimate. 714 - 211 = ?

• 710 - 210 = 500

• 650 - 200 = 450

• 750 - 250 = 500