Consumer Math Lesson 1

A dinner bill of $31.37 had 6% tax added to that total. What was the amount of the tax? a.) $1.57 b.) $18.82 c.) $1.88 d.) $33.25

$1.88

A shipping company charged $15 a ship a package and 5% of the shipping charge for insurance on the package. What was the total cost to the ship this particular item? a.) $15.75 b.) $25.20 c.) $22.50 d.) $90.00

$15.75

A bookstore is having a sale. All comic books are reduced 15%. Fill in the blank to show a correct representation of this sale. A $20 comic book is reduced to _______. a.) $5 b.) $3 c.) $15 d.) $17

$17 - The reduction in price is called a discount or markdown. The original price at which goods are sold, without any reduction, is the marked price. When discounts are given in percent, they're always applied to the marked price. Subtract the percent of discount from 100%, and then multiply the remainder by the marked price.

If you divide an inheritance of $45,600.00 among 22 heirs, what will each heir receive? a.) 207.27 b.) 2,027.27 c.) 2,073.72 d.) 2,072.73

$2,072.73

Mentally estimate the total cost of items that have following prices: $1.85, $0.98, $3.49, $9.78, and $6.18. Round off your answers to the nearest HALF-dollar. a.) $23.00 b.) $22.59 c.) $22.30 d.) $22.50

$22.50

Find the amount of the discount on a $234 item with a discount of 15%. a.) $35.01 b.) $23.40 c.) $35.10 d.) $40.00

$35.10

Express 35.4% as a decimal. a.) 0.354 b.) 354 c.) 3.54 d.) 35.0

0.354

Express 79.2% as a decimal. a.) 0.792 b.) 0.79 c.) 0.0792 d.) 7.92

0.792

The total of 36, 78, 198, 475, and 620 is _____. a.) 2,109 b.) 1,187 c.) 1,407 d.) 1,741

1,407

Which of the following choices can be used to check the answer in this equation? 205 - 110 = 95 a.) 205 + 110 + 95 = 410 b.) 205 + 95 = 300 c.) 205 + 110 = 315 d.) 110 + 95 = 205

110 + 95 = 205 - To check your answer, simply add the difference and the subtrahend. It should equal the minuend.

Express the fractions 3/4, 7/16, and 5/8 with the LCD. a.) 9/16, 49/16, 36/16 b.) 12/16, 7/16, 10/16 c.) 3/4, 2/4, 3/4 d.) 24/32, 14/32, 24/32

12/16, 7/16, 10/16

The sum of 1/6, 2/3, and 1/4 is a.) 13/12 or 1 1/12 b.) 11/12 c.) 2/72, of 1/36. d.) 4/12, or 1/3

13/12 or 1 1/12

If you grow 523 eggplants and sell 378, how many do you have left? a.) 197 b.) 154 c.) 901 d.) 145

145

Bryan wants to ship three medium-sized boxes. Two companies offer different rates. Company Rate A $14.65 per box B First box is free, $16.20 for any additional boxes Bryan used the six steps to solve this problem. On one of the steps, he decided that he would use multiplication and addition to compare the companies and find the best rate. Which step did Bryan use to help him decide? a.) Step 4 b.) Step 2 c.) Step 1 d.) Step 3

Step 4 - Step 4 helped Bryan decide which mathematical operation will produce the desired result.

What is step 2 in the problem-solving process? a.) Read the problem. b.) Do the work. c.) Write down the facts and figures. d.) Find a relationship between what is given and what be found.

Write down the facts and figures

Kim was solving a problem using the six steps. First, she read the problem. Then she wrote down the facts and figures. Next, she knew she had to find a relation between what's given and what _____. a.) mathematical operation will work. b.) method should be used to check her work. c.) label to use in the answer. d.) must be found.

must be found - After writing down the facts and figures, Kim should find a relation between what's given and what must be found.

What is the sum of 1/9, 2/3, and 5/18? a.) 19/18 b.) 12/9 c.) 4/15 d.) 8/30

19/18

Solve 15 x 14. a.) 120 b.) 210 c.) 200 d.) 225

210

Find the quotient of 5/31 divided by 15/23. Reduce your answer to the lowest fraction. a.) 23/93 b.) 75/375 c.) 93/23 or 4 1/23 d.) 115/465

23/93

If you grow 738 pumpkins and sell 481, how many do you have left? a.) 257 b.) 1,209 c.) 481 d.) 690

257

The LCD for the fractions 1/3, 3/4, 5/32, and 8/9 is _____. a.) 24. b.) 288. c.) 3,072. d.) 64.

288

When multiplying 4.73 by 2.1, how many decimal places will the product have? a.) 3 b.) 0 c.) 1 d.) 2

3 - To multiply decimals, perform the operation as you would with whole numbers. Then count the decimal places in the two factors and add them together. The total will be the number of decimal places in the product.

The amount $180.00 is what percent greater than $135.00? a.) 133.33% b.) 35% c.) 25% d.) 33.33%

33.33%

Which expression is equal to 53462 ÷ 14? a.) 3810 × 14 × 12 b.) 3818 × 14 × 10 c.) 3810 × 14 + 12 d.) 3818 × 14 + 10

3818 × 14 + 10 - To check a division problem that has a remainder, you must add the remainder to the product in your checking procedure.

Shari is adding these fractions: 1/3 + 1/4 What's her next step? a.) 1/3 + 1/4 = 2/7 b.) 4/12 + 3/12 = 7/12 c.) 4/12 + 3/12 = 7/24 d.) 1/3 + 1/4 = 2/12

4/12 + 3/12 = 7/12 - To add fractions, the denominators of each fraction must be the same. Once the denominators are equal, simply add the numerators and bring over the denominator.

Samara was playing a game. She wrote down this number sentence to find the total number of points for 11 games in a row. 5 + 7 + 9 + 3 + 1 + 3 + 9 + 8 + 5 + 2 + 3 What's the sum of her scores? a.) 45 b.) 55 c.) 30 d.) 35

55 - Add these numbers from left to right. The best way to check addition is to add the figures again. But don't merely repeat the order you used the first time; add in the opposite direction. In other words, if you added from the bottom up, check by adding from the top down. If you added from left to right, check by adding from right to left.

What is the product of 7/16, 4/3, and 1/2? a.) 2 13/48 b.) 21/32 c.) 7/12 d.) 7/24

7/24

What is the final step in the problem-solving process? a.) Decide which operations must be used. b.) Read the problem. c.) Do the work neatly. d.) Check your work.

Check your work

Look at this problem: What percent of 75 is 10? Which of the following choices can be used to solve this problem? a.) p = 10 × 75 b.) p = 10/75 c.) r = 10/75 d.) r = 10 × 75

r = 10/75 - First identify the information you're given. r = unknown, p = 10 (percentage), and b = 75 (base). Then, substitute the known values into the formula (r = p/b).

Lori solved this multiplication problem. 29 × 31 = 699 However, the mistake Lori made when multiplying is that she didn't _____. a.) regroup the 2 in the tens column. b.) add after multiplying the multiplicand by 1 and 3. c.) multiply 3 and 9 correctly. d.) place a 0 in the ones column before multiplying 3 × 9.

regroup the 2 in the tens column - When multiplying larger numbers, it's sometimes necessary to regroup, or carry, digits to the next place value.