Math practice for 13 year olds - page 87 of 422
Number of problems found: 8424
- The mass
The mass of a table is 6.4 kg, and the mass of a chair is 800 g. How many times is the table heavier than the chair? - Elisa
Elisa got the following grades in five subjects: 87, 88, 89, 88, and 90. What is her average in the five subjects? - Carates
A 5/8 karat diamond was purchased for $1200. What would a similar diamond weigh 1 karat cost? - Proportional relationship 2
If y is proportional to x, and y=150 when x=2.4, what is the value of y when x=3.5 - The cost 8
The cost of 7/2 meters of cloth is $231/4. What is the cost of one meter of cloth? - Cutting in the ratio Suppose a 75 m rope is cut in the ratio of 2/3. What is the measure of the longest cut?
- Solve 17
Solve a reciprocal equation: 18 36/64=9:n - Consecutive integers The sum of three consecutive integers is 228. Find the three consecutive integers.
- Water meter
The readings on a water meter in April and May were 417.8 m³ and 430.4 m³. If there is a basic charge of P23 and the cost per cubic meter is P20, how much is the billing for water consumption? * a. P252 b. P254 c. P272 d. P275 - A pentagon
Find the perimeter of a pentagon whose sides measure 11/2 cm, 7/4 cm, 3 1/3 cm, 2 1/3 cm and 2 1/12 cm. - The sum 26
The sum of Anna and Ina's ages is 19. In 4 years, Anna will be twice as old as Ina. What are their ages now? - A gravel
4 1/8 tons of gravel is spread evenly across 2 1/6 acres. How many tons of gravel are on each acre? - Edwin
Edwin found that 18 out of 24 of her friends have a pet. How many percent of her friends have pets? - Two numbers sum and product Two numbers have a sum of 12 and a product of 27. What is the larger number?
- Sum of 24 The sum of the two numbers is 95. If one exceeds the other by 15, find the numbers.
- Two numbers 14 Two numbers are in the ratio 7:9. If the sum of the numbers is 112, then the larger number is:
- The sum 25 The sum of the two numbers is 215. If the ratio is 2: 3, find the larger number. A. 86 B, 129 C. 215 D. 381
- Tom sold Tom sold 75% of his farm, and the number of acres sold was 150. How many acres were there on the farm before selling?
- A pancake
A pancake recipe requires 1 2/3 cups of flour to make 20 pancakes, and you have 9 cups of flour. How many pancakes can you make with 1 cup of flour? How many pancakes can you make with 9 cups of flour? - Probability 80394
We have 10 red and 10 white balls. We will take 5 white. What is the probability of picking a white ball?
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