1. I CAN divide decimals by whole numbers.

2. Remember!
Quotient
0.15 5
0.75
Divisor
Dividend

3. Example 1: Dividing a Decimal by a Whole Number
Find the quotient.
A ÷ 3 0. 2 8
Place a decimal point in the quotient directly above the decimal point in the dividend. Divide as you would with whole numbers.
3 0.84
– 6 24
– 24

4. Example 1: Dividing a Decimal by a Whole Number
Find the quotient.
B ÷ 4 0. 8 9
Place a decimal point in the quotient directly above the decimal point in the dividend. Divide as you would with whole numbers.
4 3.56
– 32 36
– 36

5. You Try! Example 1
Find the quotient.
A ÷ 3 0. 2 4
Place a decimal point in the quotient directly above the decimal point in the dividend. Divide as you would with whole numbers.
3 0.72
– 6 12
– 12

6. You Try! Example 1
Find the quotient.
B ÷ 4 0. 7 4
Place a decimal point in the quotient directly above the decimal point in the dividend. Divide as you would with whole numbers.
4 2.96
– 28 16
– 16

7. Example 3: Consumer Application
Jodi and three of her friends are making a tile design. The materials cost $ If they share the cost equally, how much should each person pay?
$10.12 should be divided into four equal groups.
Divide $10.12 by 4.
$2. 5 3
Place a decimal point in the quotient directly above the decimal point in the dividend. Divide as you would with whole numbers.
4 $10.12
– 8 21
– 20 12
– 12
Each person should pay $2.53.

8. You Try! Example 3
Ty and three of his friends are building a fence. The lumber costs $ If they share the cost equally, how much should each person pay?
$21.44 should be divided into four equal groups.
Divide $21.44 by 4.
$5. 3 6
Place a decimal point in the quotient directly above the decimal point in the dividend. Divide as you would with whole numbers.
4 $21.44
– 20 14
– 12 24
– 24

9. Reflection
CAN YOU divide decimals by whole numbers?

10. Lesson Quiz
Find each quotient.
÷ ÷ 8
3. The tennis team is having 3 of their tennis rackets restrung. The total cost is $ What is the average cost per racket?
0.39
0.71
$18.25

11. HOMEWORK
pp : 1-4, 9-13, 18, 26