Estimation Decimal Word Problem

Mrs. Krutak used 1,820 pencils last year. This year she thinks she will use 1,932 pencils. About how many pencils is that all together?

• 2,000

• 3,000

• 4,000.

• 5,000

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

• 220 books

• 180 books

• 200 books

• 160 books

237 fifth graders and 346 fourth graders went on a field trip. Estimate how many more fourth graders were on a field trip than fifth graders.

• 200 more

• 300 more

• 100 more

• 400 more

Erin has 598 goldfish to split between 22 fish tanks. About how many goldfish are in each tank? Choose the best answer

• 3 goldfish in each tank

• 20 goldfish in each tank

• 12 goldfish in each tank

• 30 goldfish in each tank

Ashleigh rode her bicycle 26.5 miles in 4 hours.  Which gives the best estimate of how far Ashleigh rode in 1 hour?

• 0.5 mile

• 0.6 mile

• 5 miles

• 7 miles

Tamaki has $32 to buy party decorations. She wants to buy 3 packs of party hats, 2 bags of balloons, and one banner. Using estimation, does she have enough money for decorations?

• Yes

• No

Choose the best estimate for the sum 43.53 + 27.67

• 74

• 70

• 60

Maria ran 1.89 miles on Monday and 2.08 miles on Tuesday. On Wednesday , Maria ran twice as many miles as she ran on Monday. Approximately how many miles did Maria run on Monday, Tuesday, and Wednesday combined? Choose the best estimate.

• 3 miles

• 6 miles

• 8 miles

• 4 miles

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

Estimating is to....

• find the exact answer

• find something close to the correct answer

• use an algorithm