Vocabulary
Percent to Decimal
Multiply Decimals
Tax and Tip
Quick Math
100

What is the cost of one item called?

What is price?

100

Change 5% to a decimal.

What is 0.05?

100

4.2 × 3

What is 12.6?

100

What is the GST in the NWT?

What is 5%?

100

100 + 5 

105

200

What is the amount before tax or tip is added?

What is subtotal?

200

Change 10% to a decimal.

What is 0.10?

200

2.5 × 4

What is 10.0?

200

Find 5% tax on $20.00

What is $1.00?

200

200 + 50

250

300

What is the final amount after everything is added?

What is total?

300

Change 15% to a decimal.

What is 0.15?

300

1.8 × 5

What is 9.0?

300

Find 10% tip on $15.00

What is $1.50?

300

2 x 3 

6

400

What is extra money given for good service?

What is a tip?

400

Change 18% to a decimal.

What is 0.18?

400

3.6 × 2

What is 7.2?

400

Find 15% tip on $20.00

What is $3.00?

400

3 x 50

150

500

What does GST stand for?

What is Goods and Services Tax?

500

When finding GST in a formula, do we use 5 or 0.05?

What is 0.05?

500

6.4 × 3

What is 19.2?

500

A meal costs $10.00. GST is 5%. What is the total with tax only?

What is $10.50?

500

1000 x 2 

2000