Page 235 - NUMINO TG_6A
P. 235
Activity 1 Better Deals
jOb ective Find which store offers a better discounted price.
1. Textbook Instructions Activity 1 Better Deals
Discuss with students which store appears to Have students use percents to figure out which of the two stores offers a better deal.
have the best deal on refrigerators. Have
them explain their answer. You want to spend less money to buy a refrigerator.
Which store should you go to?
Have students use percents to find which of
the two stores offers a better deal. 10% discount $100 cash back
Electronics A offers a 10% discount: for purchases
$800 10% $800 0.01 $80. $800 over $500
Sale price is $800 $80 $720.
Electronics B offers $100 cash back on $800
purchases over $500. Therefore, the sale
price is $800 $100 $700. Electronics A
Therefore, Electronics B has the cheapest
refrigerator. discount: sale price:
$800 10% = 800 $800 $80 = $720
Did the students change? If so, ask them
why they changed their answer. = $80
0.1
Electronics B sale price:
$800 $100 = $700
discount:
$100 cash back for
purchases over $500
The refrigerator at Electronics B is $20 cheaper than the
refrigerator at Electronics A.
132
2. Build Understanding
For students who are having difficulty, have them practice more with 100% of 50% of
percentages. Sometimes it helps their understanding when they are something is something is
viewed from a different angle. the whole thing half of it
Problem: If 100% of a number is 50, what is 50% of the number?
Answer: 50 0.50 25
218 NUMINO Teacher s Guide
jOb ective Find which store offers a better discounted price.
1. Textbook Instructions Activity 1 Better Deals
Discuss with students which store appears to Have students use percents to figure out which of the two stores offers a better deal.
have the best deal on refrigerators. Have
them explain their answer. You want to spend less money to buy a refrigerator.
Which store should you go to?
Have students use percents to find which of
the two stores offers a better deal. 10% discount $100 cash back
Electronics A offers a 10% discount: for purchases
$800 10% $800 0.01 $80. $800 over $500
Sale price is $800 $80 $720.
Electronics B offers $100 cash back on $800
purchases over $500. Therefore, the sale
price is $800 $100 $700. Electronics A
Therefore, Electronics B has the cheapest
refrigerator. discount: sale price:
$800 10% = 800 $800 $80 = $720
Did the students change? If so, ask them
why they changed their answer. = $80
0.1
Electronics B sale price:
$800 $100 = $700
discount:
$100 cash back for
purchases over $500
The refrigerator at Electronics B is $20 cheaper than the
refrigerator at Electronics A.
132
2. Build Understanding
For students who are having difficulty, have them practice more with 100% of 50% of
percentages. Sometimes it helps their understanding when they are something is something is
viewed from a different angle. the whole thing half of it
Problem: If 100% of a number is 50, what is 50% of the number?
Answer: 50 0.50 25
218 NUMINO Teacher s Guide
