Rounding Addition and Subtraction

Steven has 7,171 balloons for the parade. Adriana has 6,321 balloons for the parade. Approximately how many balloons do they have together?

• 13,492

• 13,000

• 14,000

• 13,500

Round 6,425 - 371

• 6,054

• 5,700

• 6,000

Round 26 - 14

• 12

• 20

• 40

• 30

Round 496 -123

• 400

• 373

• 619

• 600

Round then add.
27 + 64 =

• 80

• 100

• 70

• 90

Round to the nearest hundred to estimate the sum of 1,245 + 482 =

• 1,700

• 1,800

• 1,900

• 2,000

Rounding means...

• finding the exact answer.

• always making a number smaller.

• always making a number bigger.

• making a number simpler, but keeping its value closer to what it was.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 74

• 80

• 75

• 70.4

• 70

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Estimate 623 + 71

• 694

• 690

• 670

• 770

Mrs. Hinson wants to solve the problem 27 + 91 by rounding the numbers to the nearest ten. What problem would Mrs. Hinson have if she rounded the numbers?

• 30+20

• 30+90

• 30+100

• 30+10