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Mental Math-multiplying decimals
Multiplying Decimals
Adding & Subtracting Word Problems
Word Problems
Review
100
.2 x .9
What is .18
100
5.7 x 0.06
What is .342
100
2.9 + .56
What is 3.46
100
Hamlet ordered 9 pizzas. Each pizza costs $13.95. How much does he need to pay?
What is $125.55
100

Select all the ways to name 14.09

a. 1,409 โ„Ž๐‘ข๐‘›๐‘‘๐‘Ÿ๐‘’๐‘‘๐‘กโ„Ž๐‘ 

b. 1 ๐‘ก๐‘’๐‘› + 409 โ„Ž๐‘ข๐‘›๐‘‘๐‘Ÿ๐‘’๐‘‘๐‘กโ„Ž๐‘ 

c. 1 ๐‘ก๐‘’๐‘› + 4 ๐‘œ๐‘›๐‘’๐‘  + 9 ๐‘ก๐‘’๐‘›๐‘กโ„Ž๐‘ 

d. 140 ๐‘ก๐‘’๐‘›๐‘กโ„Ž๐‘  + 9 โ„Ž๐‘ข๐‘›๐‘‘๐‘Ÿ๐‘’๐‘‘๐‘กโ„Ž๐‘ 

e. 1,409 ๐‘ก๐‘’๐‘›๐‘กโ„Ž๐‘   

a. 1,409 โ„Ž๐‘ข๐‘›๐‘‘๐‘Ÿ๐‘’๐‘‘๐‘กโ„Ž๐‘ 

b. 1 ๐‘ก๐‘’๐‘› + 409 โ„Ž๐‘ข๐‘›๐‘‘๐‘Ÿ๐‘’๐‘‘๐‘กโ„Ž๐‘   

d. 140 ๐‘ก๐‘’๐‘›๐‘กโ„Ž๐‘  + 9 โ„Ž๐‘ข๐‘›๐‘‘๐‘Ÿ๐‘’๐‘‘๐‘กโ„Ž๐‘ 

200
.1 x .4
What is .04
200
7.6 x 0.8
What is 6.08
200
1.69 + 15
What is 16.69
200
Joseph has seen the movie "Hunger Games" 3 times this year. Friday night he went to watch it again. He bought a coke for $1.95 and 2 boxes of popcorn for $4.50 each. How much did he spend?
What is $10.95
200
Round 7.99 to the nearest tenth.
What is 8
300
.7 x .9
What is .63
300
1.63 x 5.4
What is 8.802
300

6.5-2.8

What is 3.7

300
George needs to change 0.02 to a whole number. How does he do this? (Do not tell me to move the decimal 2 places to the right)
What is multiply by 100
300

Find the sum and difference of 8.72 and 3.032.

Sum = 11.752

Difference= 5.688

400
.25 x 4
What is 1
400
0.38 x 0.75
What is .285
400
9.4-6.48
What is 2.92
400
Bob went to the store to buy some fruit. He bought 4.2 lbs of apples at $0.78 per pound. He also bought 2.64 lbs of oranges at $0.96 per pound. How much did Bob spend on fruit?
What is $5.81
400

Which compares the products of 7.8 ร— 0.1 and 7.8 ร— 10 correctly? 

a. The product of 7.8 ร— 0.1 is 100 times less than the product of 7.8 ร— 10.

 b. The product of 7.8 ร— 0.1 is 10 times less than the product of 7.8 ร— 10. 

c. The product of 7.8 ร— 0.1 is 100 times more than the product of 7.8 ร— 10. 

d. The product of 7.8 ร— 0.1 is 10 times more than the product of 7.8 ร— 10.

a. The product of 7.8 ร— 0.1 is 100 times less than the product of 7.8 ร— 10.

500
.05 x 0.6
What is .030 or .03
500
1.68 x .50
What is 0.84
500
10-.368
What is 9.632
500
Sherman went to the water park 4 times this year. Each time he goes he buys a hot dog for $1.50, a coke for $1.25, and a snow cone for $2. How much did Sherman spend at the water park this year?
What is $19
500
Use <, >, = 0.779_____ .8
What is <