Transcript Sales Tax and Discounts NS3. Add, subtract, multiply and divide multi-digit decimals using the standard algorithm for each operation.

Sales Tax and Discounts
NS3. Add, subtract, multiply and divide
multi-digit decimals using the standard
algorithm for each operation
10% off means for
every dollar (100
cents) you spend,
you subtract 10%
of $1 which is 10
cents.
15% off means
for every dollar
you spend, you
subtract 15% of
$1 which is 15
cents.
20% off means
for every dollar
you spend, you
subtract 20% of
$1 which is 20
cents.
10% of $1 = $0.10
15% of $1 = $0.15
20% of $1 = $0.20
10% of $2 = $0.20
15% of $2 = $0.30
20% of $2 = $0.40
10% of $3 = $0.30
15% of $3 = $0.45
20% of $3 = $0.60
Let’s Practice
Fold a piece of paper in half two times to
give you 4 work spaces on both sides.
Pick 8 items. Label each step below for
each problem in the workspace provided.
For each of the following sale items you pick:
1. Calculate the discount
2. Find the new sale price
3. Find the 7% sales tax
4. Get the total price
−
7.99
1.19
6.80
$6.80
×
6.8
.07
$0.476
7.99
× .15
1.1985
Ice cream
maker
Extra 15%
discount
+
6.80
0.48
$7.28
Subtract 15% discount
from the sale price
New price with 15%
discount
Find the Sales Tax
Sales Tax
Add Sales Tax
Final price
10.99
− 1.64
9.35
$9.35
×
9.35
.07
$0.6545
10.99
× .15
1.6485
H₂0 Bottles
+
Extra 15%
discount
9.35
0.65
$10.00
Subtract 15% discount
from the sale price
New price with 15%
discount
Find the Sales Tax
Sales Tax
Add Sales Tax
Final price
70.97
− 17.74
53.23
$53.23
53.23
×
.07
$3.7261
70.97
× .25
17.7425
PC Lamp
Extra 25%
discount
53.23
+ 3.73
$56.96
Subtract 25% discount
from the sale price
New price with 25%
discount
Find the Sales Tax
Sales Tax
Add Sales Tax
Final price
−
7.99
1.59
6.40
$6.40
×
6.4
.07
$0.448
7.99
×
.2
1.598
Girls Shirt
+
Extra 20%
discount
6.40
0.45
$6.85
Subtract 20% discount
from the sale price
New price with 20%
discount
Find the Sales Tax
Sales Tax
Add Sales Tax
Final price
16.00
− 3.20
12.80
$12.80
12.8
×
.07
$0.896
×
16
.2
3.2
Boys Shirt
Extra 20%
discount
12.80
+ 0.90
$13.70
Subtract 20% discount
from the sale price
New price with 20%
discount
Find the Sales Tax
Sales Tax
Add Sales Tax
Final price
19.99
− 3.99
16.00
$16.00
×
16
.07
$1.12
19.99
×
.2
3.998
Mack
Monkey
Extra 20%
discount
16.00
+ 1.12
$17.12
Subtract 20% discount
from the sale price
New price with 20%
discount
Find the Sales Tax
Sales Tax
Add Sales Tax
Final price
16.99
− 3.39
13.60
$13.60
×
13.6
.07
$0.952
16.99
×
.2
3.398
Volcano
Kit
Extra 20%
discount
13.60
+ 0.95
$1 4.55
Subtract 20% discount
from the sale price
New price with 20%
discount
Find the Sales Tax
Sales Tax
Add Sales Tax
Final price
26.99
− 5.39
21.60
$21.60
×
21.6
.07
$1.512
26.99
×
.2
5.398
Tie Dye
machine
21.60
+ 1.51
Extra 20%
discount
$23.11
Subtract 20% discount
from the sale price
New price with 20%
discount
Find the Sales Tax
Sales Tax
Add Sales Tax
Final price
49.99
− 9.99
40.00
$40.00
×
40
.07
$2.80
49.99
×
.2
9.998
Soccer
Goal
Extra 20%
discount
40.00
+ 2.80
$42.80
Subtract 20% discount
from the sale price
New price with 20%
discount
Find the Sales Tax
Sales Tax
Add Sales Tax
Final price
139.99
− 27.99
Subtract 20% discount
from the sale price
112.00
New price with 20%
$112.00 discount
×
112
.07
$7.84
139.99
×
.2
27.998
Electric
Guitar
Extra 20%
discount
112.00
+ 7.84
$119.84
Find the Sales Tax
Sales Tax
Add Sales Tax
Final price
269.99
− 26.99
269.99
×
.10
26.9990
Arc Lamp
Extra 10%
discount
Subtract 10% discount
from the sale price
243.00
$243.00
New price with 10%
discount
243.00
×
.07
Find the Sales Tax
$17.0100
Sales Tax
243.00
+ 17.01
Add Sales Tax
$260.01
Final price
229.99
− 22.99
207.00
$207.00
207
× .07
$14.49
229.99
×
.10
22.9990
Subtract 10% discount
from the sale price
New price with 10%
discount
Find the Sales Tax
Sales Tax
Maui
Lamp
207.00
+ 14.49
Add Sales Tax
Extra 10%
discount
$221.49
Final price
174.99
− 17.49
157.50
$157.50
174.99
×
.1
17.499
Subtract 10% discount
from the sale price
New price with 10%
discount
157.50
×
.07
Find the Sales Tax
$11.0250
Sales Tax
Blue Gem
Lamp
157.50
+ 11.03
Add Sales Tax
Extra 10%
discount
$168.53
Final price
219.99
− 21.99
198.00
$198
×
198
.07
$13.86
219.99
×
.1
21.999
Subtract 10% discount
from the sale price
New price with 10%
discount
Find the Sales Tax
Sales Tax
Tiffany
Lamp
198.00
+ 13.86
Add Sales Tax
Extra 10%
discount
$211.86
Final price