Front End Estimation
How can you estimate the sum or difference to the nearest thousand?
Reminder: solve FIRST, THEN ROUND THAT ANSWER
8,303 - 2,789 = ?
Actual answer: 5,514
Rounded answer: 5,000
Front end estimation: 6,000
What is the sum?
4,380 + 612 = ?
4,992
Find the difference
2,532 - 1,301 = ?
1,231
What is the sum?
12,058 + 4,867 = ?
16,925
There are 140 jars of paint. 95 of the jars were used the first half of the year. A teacher bought 35 more jars of paint. By the end of the year, she had 15 unused jars of paint. How many jars of paint were used the second half?
65 jars of paint
How can you estimate the sum or difference to the nearest hundred?
Reminder: solve FIRST, THEN ROUND THAT ANSWER
3,783 + 1,416 = ?
Actual answer: 5,199
Rounded Answer: 5,200
Front end estimation: 4,000
What is the sum?
12,943 + 4,036 = ?
16,979
Find the difference
8,018 - 7,659 = ?
359
What is the sum?
4,827 + 3,505 = ?
8,332
The cafeteria had 940 cartons of milk during breakfast and 1,670 cartons of milk for lunch. The cafeteria had 7,036 cartons of milk at the end of the day. How many milk cartons did the cafeteria had at the beginning of the day?
9,646 cartons
How can you estimate the sum or difference to the nearest hundred?
Reminder: solve FIRST, THEN ROUND THAT ANSWER
4,228 + 986 = ?
Actual answer: 5,214
Rounded Answer: 5,000
Front end estimation: 4,900
What is the sum?
7,264 + 2,321 = ?
9,685
Find the difference
12,469 - 10,212 = ?
2,257
Find the difference
12,050 - 7,983 = ?
4,067
The company made 3 batches of papers. The first batch had 7,355 flyers. The second batch had 1,690 fewer flyers than the first batch. The third batch had 895 fewer than the second batch. How many flyers did they print in all?
17,790 flyers
How can you estimate the sum or difference to the nearest hundred?
Reminder: solve FIRST, THEN ROUND THAT ANSWER
3,155 + 2,205 = ?
Actual answer: 5,360
Rounded Answer: 5,400
Front end estimation: 5,000
What is the sum?
8,405 + 1,571 = ?
9,976
Find the difference
11,023 - 1,414 = ?
9,609
Find the difference
67,821 - 7,954 = ?
59,867
There are 625 students going on a trip. The students are in 4 groups. Group 1 had 144 students. Group 2 had 162 students. Group 3 had 155 students. How many students were in Group 4?
164 students
How can you estimate the sum or difference to the nearest hundred?
Reminder: solve FIRST, THEN ROUND THAT ANSWER
2,352 + 8,761 = ?
Actual answer: 11,113
Rounded Answer: 11,100
Front end estimation: 11,200
What is the sum?
64,457 + 3,502 = ?
67,959
Find the difference
84,649 - 126 = ?
84,523
Find the difference
172,005 - 48,273 = ?
123,732
A food bank collected 3,887 cans of food in one month. The next month they collected 997 more cans. The following month they collected 572 fewer cans than the first month. How many cans were collected all three months?
12,086 cans