Vocabulary
What are these called?
3/4, 5/8, 12/15
Fractions
1/3 x 1/5
1/15
3/4 divided by 5/12
1 4/5
8.13+2.76
10.89
6 x 3.91
23.46
What is the top number and the bottom number of a fraction called?
Numerator
Denominator
3/7 x 2/3
2/7
4/5 divided by 2
2/5
18.626-13.88
4.746
5.1024 x 12
61.2288
What is the reciprocal of a fraction?
The inverse, a fraction flipped over
3 1/2 x 4/9
1 5/9
2 2/3 divided by 2/3
4
15.35 + 7.604 - 12.954
10
3 x 0.016
0.048
What are the rules when dividing fractions?
Keep
Change
Flip
1 4/5 x 3 2/3
6 3/5
3 5/6 divided by 1 2/3
2 3/10
16.5 - 13.5 + 7.293
10.293
4.8 x 7.2
34.56
What are these rules called:
1. Grouping
2. Exponents
3. Multiplication/Division or Division/Multiplication
4. Addition/Subtraction or Subtraction/Addition
Orders of Operations
You have 2/3 of a bag of sugar. You use 3/4 of the sugar to make cookies. How much of the entire bag do you use to make the cookies?
1/2
A cook uses 50 cups of soup. One serving is 1 2/3 cups. Is there enough to serve 35 people?
30, there is not enough
A gymnast score is calculated by finding the sum of difficulty score and execution score, minus penalties. It starts at 10 and is reduced by deductions. What is the score?
6.9 + ( 10.0 - 1.534 ) - 0.3
15.066
A science teacher buys 3.2 ounces of zinc. The cost of the zinc is $2.10 per ounce. If he pays with a $10, what is his change?
$3.28