Ratios
What are the three ways we can write the answer for ratio?
Colon(:) Words(to) Fraction(1/2)
What are the two ways that ratios compares groups?
part to part part to whole
What type of reasoning focuses on the use of addition and subtraction for comparisons?
Additive reasoning
Find the number that makes these ratios equivalent?
_:6 = 6:9
4
3/4 as a decimal
What is 0.75
Write an example of the three ways to write a ratio using the numbers 1 and 4
1 to 4 1:4
For every 4 hot dogs, 5 sodas are sold. What is the ratio of sodas to hot dogs sold? Give 3 equivalent (proportional) ratios.
5 to 4 5:4 5/4
Look at the comparison below and tell me what kind of reasoning is being used?
I’m 1/2 as old as you are!
Multiplicative Reasoning x
Find the number that makes these ratios equivalent?
_ /12 = 9/36
3
Are the following fractions proportional?
2/3 and 4/6
Yes
Write 6 limes to 18 lemons as a part to part ratio(lemons to limes). Then write it as a part(limes) to whole ratio. Reduce the part to whole ratio only
18:6 6:18 = 1:3
There are 3 pineapples, 5 bananas, 12 strawberries, and 4 peaches in a fruit salad. What is the ratio of bananas to total fruit? (reduce)
5/25=1/5
Sarah's café baked 24 dozen cookies this week. This was 3 times more than she baked last week. How many dozen cookies did she bake last week and what kind of reasoning are you using?
Multiplicative reasoning: 8 dozen
Find the number that makes these ratios equivalent?
_ /6 = 8/12
4
73% as a decimal
What is 0.73?
What is another word for "proportional"?
Equivalent
I need 7 drops of blue dye and 42 drops of red dye to make purple tie-die shirts for his soccer team. What is the unit rate for blue dye?
1 unit (drop) blue to 6 units (drops) red
The book fair sold 47 more books in Taos than in Santa Fe. If they sold 328 books in Taos, how many books did they sell in Taos?
Additive reasoning: 375 books
Find the number that makes these ratios equivalent?
6/10 = 18/_
30
25% of 76
19
There are 34 boys and 35 girls in the 5th grade at the Swanson School for Short Stops. If 14 of the boys were wearing hats, and 23 girls were not wearing hats, what is the ratio of girls to boys that were not wearing hats? (use a colon)
23:20
Suppose Brandon needs 2 parts blue paint and 5 parts yellow paint to make green paint. Write 3 equivalent ratios.
4:10, 6:15, 8:20, 10:25:, 12:30
What two operations will produce equivalent ratios?
A. Adding
B. Subtracting
C. Multiplying
D. Dividing
C. Multiplying and D. Dividing
Find the number that makes these ratios equivalent.
3:8 = 15:_
40
Mrs. Luke was in 55th place in the final Survivor listings. If there were 13,000 contestants, what percentage of contestants did she place better than? (round to the nearest tenth of a percent)
What is 99.6%?