Show:
Mental Math
Whole # x decimal
Multiplying with Zeros
Multiplying Decimals
Potpourri
100
0.009 x 10
What is 0.09
100
9.8 x 2
What is 19.6?
100
0.87 x 0.04
What is 0.0348?
100
0.05 x 4.5
What is 0.225?
100
Zach gets an allowance of $10 a week. He saves 0.2 of it. How much does he save each week?
What is $2?
200
0.45 x 100
What is 45?
200
0.67 x 8
What is 5.36?
200
0.6 x 0.08
What is 0.048?
200
8.6 x 0.08
What is 0.688?
200
A 3 lb bag of apples costs $2.49 and a 2 lb bag of apples costs $1.97. If Raul buys five bags of each, how much money does he need to pay for all the apples? Write 3 equations to help you solve.
1) 5 x 2.49 = A 2) 5 x 1.97 = B 3) A+B = C Raul would need to pay $22.30 for all the apples. (you can replace the second A and B with 12.45 for A, and 9.85 for B)
300
Estimate 24.98 x 0.23
25 x 0.2 = 5.0 or 5 (Other estimations could work as long as work is shown, DO NOT ROUND 0.23 to 0!!)
300
0.457 x 3
What is 1.371?
300
5.02 x 0.002
What is 0.01004
300
3.42 x 4.7
What is 16.074?
300
**Mrs. Lynch Trivia** What is Mrs. Lynch's favorite food?
Spinach artichoke dip
400
0.062 x 1000
What is 62?
400
45 x 0.003
What is 0.135?
400
**DOUBLE JEOPARDY** 3.04 x 0.009
0.02736
400
9.1 x 11.6
What is 105.56?
400
**Mr. Z Trivia** Who was Mr. Z's favorite baseball player when he was growing up?
Albert Belle
500
Yvonna spends estimates that 0.33 x 0.9 = 270. Write in a complete sentence, if Yvonna's answer is right or wrong and why.
Yvonna is wrong! 0.33 would round to 0.3 and 0.9 could stay the same or round to 1. 1) 0.3 x 0.9 = 0.27 2) 0.3 x 1 = 0.3 (Other estimations could work if work is shown, DO NOT ROUND 0.33 to 0!!)
500
514 x 0.4
What is 205.6?
500
8.68 x 0.51
What is 4.4268?
500
0.28 x 3.7
What is 1.036?
500
A class raised $435, $460, and $605 for charity. If thirty charities are getting an equal amount of money from the total, how much money does each charity get? Write 2 equations to help you solve.
1) 435+460+605 = B 2) B รท 30 = C Each charity would receive $50 (You can replace the second B with 1500)