September 2, 2016
Lesson 1-5
Estimating Quotients
 2 Map Colors
 Glue
Process Standard:
5.1C – select tools, including real objects, manipulatives, paper
and pencil, and technology as appropriate, and techniques,
including mental math, estimation, and number sense as
appropriate, to solve problems
Standard:
5.3A - estimate to determine solutions to mathematical and
real‐world problems involving addition, subtraction,
multiplication, or division
4 732
6 192
WORD
DEFINITION
divisor
The number you are
dividing by
dividend
The number that is
being divided
quotient
The answer to a
division problem
EXAMPLE
18 ÷ 2
2 18
2 18
18 ÷ 2
18 ÷ 2 = 9
9
2 18
Dividing divisors and dividends that end in zeros.
6÷2=3
60 ÷ 20 = 3
600 ÷ 20 = 30
6,000 ÷ 20 = 300
28 ÷ 4 = _____
280 ÷ 4 = _____
280 ÷ 40 = _____
2,800 ÷ 40 = _____
15 ÷ 3 = 5
150 ÷ 30 = 5
1,500 ÷ 30 = 50
15,000 ÷ 30 = 500
360 ÷ 90 = _____
3,600 ÷ 90 = _____
36,000 ÷ 90 = _____
36,000 ÷ 900 = _____
Estimating quotients using compatible numbers
1. Find compatible
numbers by thinking of
a basic fact.
2. Rewrite the division
problem using
compatible numbers.
Match place values
3. Solve
1,976 ÷ 4
Estimate each quotient using compatible numbers.
1. 360 ÷ 7
2. 117 ÷ 3
Estimate each quotient using compatible numbers.
3. 421 ÷ 8
4. 297 ÷ 4
Estimate each quotient using compatible numbers.
5. 287 ÷ 42
6. 2,280 ÷ 12
Estimate each quotient using compatible numbers.
7. 288 ÷ 37
8. 2,491 ÷ 48
Estimate each quotient using compatible numbers.
9. 485 ÷ 92
10. 1,710 ÷ 32
Estimate each quotient using compatible numbers.
11. 815 ÷ 23
12. 1,220 ÷ 59
13. 3,390 ÷ 42
14. 7,260 ÷ 83
Have a good weekend!