Topic 6 and 7

Use mental math to find the product: .683 * 10 2

68.3

Use mental math to find the quotient: 1.45 / 10 3

.00145

Write a complete equation to show how you estimated the product: .32 * 79

.3 * 80 = 24.0

Write a complete equation to show how you estimated the quotient: 55.5 / 7.4

56 / 7 = 8

Place the decimal in the quotient: 9.36 / 3.2 = 2925

2.925

Place the decimal in the product: 9.54 * .5 = 477

4.77

Write an equation and then solve the problem: John spends $1.45 for lunch each school day. How much does he spend in one school week ( 5 days)?

$1.45 * 5 = n n=$7.25

Solve the word problem: Heather bought 3 packs of colored pencils and 2 pieces of poster board. Each piece of poster board cost $.75 and each pack of colored pencils cost $2.35. How much did she have to pay?

$8.55

Use a hundredths grid to represent the problem : .2 * .6

.6 .12 .2

Find the product : 3.4 * 5.9

20.06

Find the product : 25 * 6.5

162.5

Find the product : 945.3 * 2.3

2174.19

Find the quotient : $195.35 / 5

39.07

Find the quotient : 36.3 / 0.03

1210

Find the quotient : 96 / .15

640

Solve the word problem: Tony read a book that was 500 pages long! He estimates it took him about 3.7 minutes to read each page. How many minutes does it take him to read the entire book? If he reads the entire book in 5 days, how many minutes did he read each day?

1,850 minutes 370 minutes

Solve the word problem: Peggy is buying cookies for her birthday party. One cookie cost $1.12. A box of 12 cookies cost $12.60. How much will Peggy save in all if she buys a box of 12 cookies? How much will she save per cookie?

$0.84 in all $.07 per cookie

Solve the word problem: If John’s batting average is .501 about how many hits will he get if he takes 20 at bats? (Hits = Batting average * at bats) Write a complete estimated equation.

20 * .5 = 10