Math practice for 13 year olds - page 33 of 365
Number of problems found: 7285
- The product 12
The product of 2 1/4 and another fraction is 7 1/2. Find the other fraction.
- Terrance
Terrance budgets $435 of his salary for car expenses. His salary is $2 900. What percent of his salary is budgeted for car expenses?
- One-third 14
One-third of a 1 1/4 acre has been set aside for a dog park. Find the number of acres that are used as a dog park.
- The playground 2
The dome is built on the playground. The dome covers an area of 1 2/3 square meters, which is 5/840 of the total area of the playground. What is the total area of the playground?
- Laila
Laila is 3/2 m tall, which is 4/5 as tall as Shanika. How tall is Shanika? What formula or equation does represent this situation?
- Ruel cut
Ruel cut the grass on 1/5 of a hectare in an hour. How long will it take him to cut the grass on 3/4 of a hectare?
- The ratio
At a certain convention, the ratio of men to women is 3 to 8. If there were 352 people there, how many were men?
- Polynomial rectangle
If the length and width of a rectangle are (a² - 6a + 4) and ( -2a² - 9a + 3), find the area of the rectangle.
- Temperature - linear function
In the morning, at 08:00 hours, the temperature was -8°C, and in the afternoon, at 16:00 hours, the temperature was 24°C. Assuming that the temperature changes steadily, what was the temperature at 1300 hours, and what was the time when the temperature wa
- Average grade
Find the average grade of Nika: 87.3 86.4 92.5 94.6 95.8 Using the Honors Guide, Is it correct that Nika's rank is Second Honor? Explain your answer. Lowest Grade Average ; Rank 90-92; First Honor 88-90; Second Honor 85-88; Achiever
- Salt water
The ratio of water (in liters) to salt (in grams) needs to be 3 to 2. If we add 10 grams of salt, how much water do we need to add?
- Solve 23
Solve the following inequality: 4 - ½ (2 x - 3) < 1/3 (5 - 3 x)
- 56.9 divided
56.9 divided by 10 missing exponents = 0.569
- Solve 22
Solve the equation with two ratios: x:14=28:196
- Ratio 28
Ratio 3 to 2. If a total of 30 dogs and cats were in the neighborhood, how many cats were there?
- The ratio 14
The ratio of boys to girls is 8:7. If there are 40 boys, how many girls are there in the class?
- Peter 14
Peter bought ¼ kg, and Paolo bought 1 ½ kg of bananas. How much did they pay if each kilo costs Php 24.00?
- Three mixed
5 1/4 is added to a number, and the answer is 11 1/2. What is the number?
- A 100-inch
A 100-inch stick is to be divided into four using the ratio 2: 5: 7: 11. How long is the longest piece?
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