Estimation
Vocabulary
÷ Using Traditional Algorithm
Trailing Zeros
Word Problems
100
Use mental math to solve 300 ÷ 3
What is 100?
100

The amount leftover after dividing is called the

Remainder

100
78 ÷ 5
What is 15 R3?
100

50,000 ÷ 10

What is 5,000?

100

Ms. Gibbs class is buying scrapbooks for her students. Her budget is $350. Each scrapbook costs $9. How many scrapbooks can she buy?

38 scrapbooks. The remainder means she has $8 left over.

200
Estimate to solve. 810 ÷ 10
What is 8? (Round 810 to 800 and solve 800 ÷ 10)
200

The amount BEING divided is called the

Dividend

200
47 ÷ 2
What is 23 R1?
200

120,000 ÷ 300

What is 400?

200

Mrs. Van Dusen swam 932 meters in 3 days. If she swam the same amount everyday, about how many meters did she swim total.

Either Answer is accepted: About 310 meters (932 is rounded to 930, then solve 930 ÷ 3) or About 300 meters (932 is rounded to 900, then solve 900 ÷ 3)

300

Estimate to Solve: 180 ÷ 12

What is 20? (Round 180 to 200 and 12 to 10. Then solve 200 ÷ 10)

300

The answer to a division sentence is called the

Quotient

300
257 ÷ 9
What is 28 R5?
300

4,400 ÷ 110

What is 40?

300

In 4 hours, Sydney read 52 pages. If she read the same number of pages each hour, how many pages did Sydney read in one hour?

What is 13 pages?

400
Estimate using compatible numbers to solve 244 ÷ 8
What is 30? (Round 244 to 240, then solve 240 ÷ 8)
400

The number doing the dividing, the number of equal groups is called the

Divisor

400

384 ÷ 8

48

400

3,600 ÷ 12

What is 300?

400

Reese wants to join the basketball team. She practices 812 minutes in 4 weeks. She practices the same number of minutes each week. How many minutes does Reese practice each week?

What is 203 minutes?

500
Estimate to Solve. 121 ÷ 42
What is 3? (Round 121 to 120, round 42 to 40. Then solve 120 ÷ 40)
500

What is the relationship between division and multiplication? Show using an example.

Division and multiplication are inverse (opposite) properties. You can use your multiplication facts to help you with your division facts (fact families). You also can check your division quotient by using multiplication.

500

981 ÷ 3

What is 327

500

30,000 ÷ 60

What is 500?

500

Reece invited 291 guests to a dinner at Eagle Ridge. Each table seats 8 guests. How many tables are needed.

All guests need a table, so Eagle Ridge would need 37 tables total. We can not have any guests standing.