Estimating
What is the best estimate of 330 ÷ 4 = ?
80.
320 / 4 = 80.
Solve 900 ÷ 9 = ?
100.
Solve 2,100 ÷ 3 = ?
700.
A stadium has 5 sections, each section can sit the same amount of people. A total of 1,950 can be seated in the entire stadium. How many people can sit in each section?
390 people in each section.
1,950 / 5 = 390.
Solve 6,000 ÷ 12 = ?
500.
6,000 / 12 = 500.
What is the best estimate of 2,501 ÷ 6 = ?
400.
2,400 / 6 = 400.
Solve 7,200 ÷ 8 = ?
900.
Solve 738 ÷ 5 = ?
147 R 3.
Three 4th grade classes collected 1,281 pounds of trash altogether. If each class collected the SAME amount of trash, how many pounds of trash did EACH class collect on their own?
427 pounds each.
1,281 / 3 = 427.
What is the best estimate of 5,389 ÷ 9 = ?
600.
5,400 / 9 = 600.
What is the best estimate of 4,440 ÷ 6 = ?
700.
4,200 / 6 = 700.
While 800 is also close (4,800 / 6 = 800), 700 is closer.
Solve 853 ÷ 6 = ?
142 R 1.
Solve 1,203 ÷ 3 = ?
401.
There are 128 students going on a field trip. Each bus holds 40 students.
How many buses are needed?
4 buses.
128 ÷ 40 = 3 R 8 (you can’t leave students behind).
There are 89 stickers. Each student gets 5 stickers.
How many stickers are left over?
4 stickers are left over.
89 / 5 = 17 R 4.
What is the best estimate of 6,502 ÷ 8 = ?
800.
6,400 / 8 = 800.
Solve 673 ÷ 2 = ?
336 R 1.
Solve 1,505 ÷ 5 = ?
301.
A baker has 92 cookies. He puts 10 cookies in each bag.
How many full bags can he make?
9 full bags.
92 ÷ 10 = 9 R 2 (2 cookies leftover, can't make bag).
Mr. Grocott uses 6 nails to secure each board of a fence. If there are 4,363 nails in a box, ABOUT how many boards will Mr. Grocott be able to secure?
ABOUT 700 boards.
Round 4,363 to 4,200, 4,200 / 6 = 700.
What is the best estimate of 5,216 ÷ 5 = ?
1,000.
5,000 / 5 = 1,000.
Solve 1,576 ÷ 4 = ?
394.
Solve 3,692 ÷ 7 = ?
527 R 3.
There are 118 students. Each class can have 25 students MAXIMUM.
How many classes are needed?
5 classes.
118 ÷ 25 = 4 R 18 (18 students left make another class).
There are 572 cupcakes. Each box holds 8 cupcakes MAXIMUM.
How many boxes are needed?
72 boxes are needed.
572 / 8 = 71 R 4 (can't throw out the extra 4 cupcakes, so use another box).