Estimation Differences

Leo's morning bus route picked up 176 students for school. In the afternoon, the bus took 84 students home. Which estimate shows about bout how many more students did Leo's bus take in the morning than in the afternoon?

• 300

• 100

• 200

• 20

Cale bought 231 cows and Lisa bought 392 cows. About how many total cows did they buy?

• 600 cows

• 1,000 cows

• 200 cows

• 100 cows

Which number sentence shows the best estimate of the total number of coins?

• 350+180+40= 570

• 300+100+80= 480

• 360+140+80= 580

• 340+140+ 80 =590

Amy had 13 jelly beans in her left hand and 28 in her right hand. Estimate how many jelly beans Amy had in all.

• 45

• 40

• 50

• 30

Bobby has 44 toy cars and trucks. He also has 62 ninja turtles and soldiers. Estimate how many toy cars, trucks, ninja turtles and soldiers Bobby has.

• 86

• 10

• 100

Estimating is to....

• find the exact answer

• find something close to the correct answer

• use an algorithm

Julie was playing Fruit Ninja on her tablet. On the first round she scored 225 points, on the second she got 199 points and in the third round she scored 94 points. Which of the following number sentences shows one way to estimate how many points Julie won during these 3 rounds?

• 200 + 200 + 100 = 500

• 200 + 200 + 50 = 450

• 200 + 100 + 90 = 390

• 100 + 100 + 100 =300

Amy rode her bike last weekend. Which is the best estimate of the total number of miles she rode her bike?

• 80 miles

• 60 miles

• 70 miles

• 90 miles

Which is the best estimate of the total number of books they read?

• 220 books

• 180 books

• 200 books

• 160 books

Estimate the difference between 6.84 and 4.29.

• 2.55

• 3.75

• 5.92

• 1.23