Rounding and Estimation Word Problems

I climbed 125 feet on Tuesday and 376 feet on Wednesday. Which number sentence shows the best way to estimate the amount of feet I climbed on both days?

• 100+300=400

• 100+400=500

• 200+300=500

• 200+400=500

I studied for 49 minutes on Tuesday and 57 minutes on Wednesday. Which number sentence shows the best way to estimate how many minutes I studied for both days? 

• 40+50=90

• 40+60=100

• 50+60=110

• 50+50=100

I am saving money for a trip to Disney. The theme park cost $385, food will cost $293 and gifts will cost $93. Which number sentence is the best estimate of the amount of money I will spend? 

• 390+290+90=

• 380+290+90=

• 390+300+100=

• 380+300+90=

There are 367 students in third grade and 158 in fourth grade. About how many more students are in third grade than fourth? 

• 600

• 300

• 520

• 200

Aria is buying a gift that costs 678 dollars and she has a coupon for 345 dollars. Estimate the difference between the cost and the coupon value by rounding each amount to the nearest ten.

• 330

• 340

• 350

• 360

Joe spent $167 on camping gear. Rounded to the nearest hundred, about how much money did he spend?

• $100

• $160

• $170

• $200

Round to the nearest hundred, then estimate the difference:

642 − 137

• 600

• 780

• 500

• 510

Sophia and Aiden are planning a road trip. They estimate the distance to be 2,345 miles and 1,678 miles for two different stops. Estimate the total distance by rounding each number to the nearest hundred.

• 4,000

• 4,100

• 4,200

• 4,300

Round to the nearest hundred to estimate the sum of 432 + 348.

Hint: Stack your numbers!

• 600

• 700

• 800

• 900

Jerry is putting a puzzle together. The number of pieces he has left, rounded to the nearest hundred, is 400 pieces. Which could be the actual number of pieces Jerry has left?

• 319

• 350

• 450

• 499