Rounding and Estimation for Addition and Subtraction

Solve the problem using an open number line

145 + 35 =

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 to the nearest ten thousand. 67,234

• 60,000

• 67,000

• 70,000

• 70,200

Round to the nearest tenths. 62.27

• 62.20

• 62.30

• 63.00

• 63.70

Estimate 623 + 71

• 694

• 690

• 670

• 770

Round to the nearest tens. 744

• 700

• 750

• 740

• 800

Round 26 - 14

• 12

• 20

• 40

• 30

Round to the nearest thousands. 78,964

• 80,000

• 70,000

• 79,964

• 79,000

Round to the nearest ones. 78.20

• 79.00

• 78.00

• 80.00

• 78.20

Round 496 -123

• 400

• 373

• 619

• 600