Multiplication
394.5 x .01
3.945
.72 / 3
.24
About how much is 16 x 0.46
A- A little more than 36
B- A little less than 8
C- A little more than 8
D- A little less than 5
B- A little less than 8
What is the difference with where you put the decimal point in addition versus multiplication?
Addition you line the decimal points up and multiplication you multiply like normal then count how many numbers are behind the decimal point. The answer will need to have the same amount of numbers behind it
Kole bought 3 shirts for $17.89 each and a pair of shoes for $89.99. If he gave them $150, how much change does he get?
$6.34
516.38 x 0.01
5.1638
6.831 / 0.01
683.1
8.35 / 2.2
a- 4 c- 20
b- 9 d- 5
A- 4
When there is a decimal point in the divisor what do you need to do?
Make that number a whole number by moving the decimal point to the right.
You need to move the decimal point in the dividend the same amount of times to the right
Kyle is making a model car and spent $19.20 on the materials. The kit cost $6.37 and the paint was $7.13. He also bought stickers for $0.16 each. How many stickers did he buy?
35 stickers
38.4 x 0.1
3.84
345.7 / 0.1
3457
18.05 / 1.7
a- 4 c- 5
b- 20 d- 9
d- 9
18.46 / 2 = 923
Where does the decimal place go?
9.23
Five friends bought candy and drinks for a movie. The candy cost $24.53 and the drinks cost $40.17. Each friend paid the same amount. How much did each friend pay?
$12.94
683 x 25
17075
Divide and write remainder as a fraction
1883 / 11
171 r 2/11
Best estimate of the product 68.37 x 0.5
a- 70 c- 35
b-136 d- 300
C- 35
634.23 x 3.45 = 21880935
Where does the decimal go?
2188.0935
A ten foot piece of electrical tape has five pieces cut that are each 1.25 ft. What is the new length of the tape?
3.75 ft
385 x 2
770
3467 / 17
203 r 16/17
Sara says the product of 86 x 0.46 will be greater than 43 but less than 86. Is she correct? Why?
a- incorrect because 86 x 46 is greater than 86
b- correct because .46 rounds to .5 and half of 86 is 43
c- incorrect because .46 is less than half so the answer will be less than 43
d- correct because you always get bigger numbers when you multiply
C- correct because .46 rounds to .5 and half of 86 is 43
75.84/ 2.4= 316
31.6
If your weekly salary is $1015.00 how much money do you have left after you pay $443.50 for rent, $23.99 cable, $45.62 for electricity, $124.87 for groceries?
$377.02