Ratios (SIMPLIFY)
There are 16 girls to 20 boys. What is the ratio?
4:5 or 4/5 or 4 to 5
If Nora drives 50 miles in 2 hours, what is her rate (speed per hour)?
25 miles per hour (25 m/h)
Determine if each pair of ratios or rates is equivalent. $3 for 6 bagels; $9 for 24 bagels. If not, which is the better deal?
No, since the unit rates, $0.50/1 bagel and $0.38/1 bagel, are not the same, the rates are not equivalent.
8-2
1/64
Nate has 25 red M&Ms and 15 green M&Ms, what is the ratio of red to total?
5:8 or 5/8 or 5 to 8
Caira bought a package of three T-shirts for $18.00 What is the unit price per T-shirt?
$6.00
Determine if each pair of ratios or rates is equivalent. 96 words typed in 3 minutes; 160 words typed in 5 minutes. If not, which is faster?
Yes; since the unit rates are the same, 32 words/1 minute, the rates are equivalent.
Write 0.000375 in scientific notation
3.75 x 10-4
The ratio of catfish to trout in Jordon's pond is 1 to 3. If there are 200 catfish in the pond, how many trout are there?
600
If Zach bought 10 bags of hot Cheetos for $3.50, then how much does 1 bag cost?
$0.35
Determine if each pair of ratios or rates is equivalent. 288 miles on 12 gallons of fuel; 240 miles on 10 gallons of fuel. If not, which is the better miles to gallons?
Yes; since the ratios share the same unit rate, the number of miles driven and the number of gallons of fuel form equivalent ratios.
4-3 x 43
40 or 1
In Krystal's math class, there are 12 boys and 15 girls. What is the ratio of girls to boys in Krystal's math class?
5:4 or 5/4 or 5 to 4
Zeke bought a 5-pound can of peanuts for $12.50. What is the unit price?
$2.50
Determine if each pair of ratios or rates is equivalent. 16 out of 28 students own pets; 240 out of 560 students own pets
No the ratios are not equivalent.
Name the property: (ab)c=a(bc)
associate property of multiplication
If the ratio of chairs to desk in a room is 2:3, and there are 18 desks. How many chairs are there?
12 chairs
Avery bought a box of 20 pretzel rods for $4.40. What is the price per pretzel rod?
$0.22
Determine if each pair of ratios or rates is equivalent. 8 pairs of socks for $12; 3 pairs of socks for $6. If not, which is the better deal?
No the ratios are not equivalent.
Evaluate: 4.8 x 105/ 12 x 10-3 (leave answer in scientific notation)
4 x 107