Estimation

If I have 58 gummy bears, and then I eat 20 --- ABOUT how many gummy bears do I have left?

• 38 gummy bears

• 40 gummy bears

• I don't know because I am sure you ate more than 20.

• 80 gummy bears

When you see the word ABOUT in math, you know to . . . ?

• Add

• Subtract

• Estimate

• Product

When you estimate, are you looking for the exact amount or a reasonable amount?

• reasonable amount

• specific amount

• approximate amount

• exact amount

Round to the nearest thousand, then estimate the sum:

2,764 + 4,851

• 8,000

• 5,000

• 6,000

• 7,000

Estimate to find the product of 395 x 4

• 1000

• 1600

• 1200

• 1500

Estimate to find the product of 39 x 68

• 2500

• 3000

• 3500

• 2800

Estimate the quotient: 1,769 ÷ 23

• 100

• 95

• 85

• 80

A scientist counted 3,921 total eggs in 49 sea turtle nests. There were about the same number of eggs in each nest. Which is a reasonable estimate of the number of eggs she counted in each nest?

• 100 eggs

• 60 eggs

• 120 eggs

• 80 eggs

Estimate 45+56 by rounding off to the nearest tens.

• 90

• 100

• 110

• 101

A car company sold 600,544 vehicles last year and 725,726 vehicles this year. About how many more vehicles has the company sold this year?

• 110,000

• 120,000

• 130,000

• 200,000