Math practice for 13 year olds - page 92 of 414

Number of problems found: 8262

Bread apple carbohydrate
Bread contains an average of 52% carbohydrates, and apples have 12% carbohydrates. How many apples weighing 220 g would you have to eat to get as much carbohydrate as 150 g of bread?
Pumpkin seed germination
The germination rate of Hokkaido pumpkin seeds is 92%. The weight of 10 seeds is 1.6 g. How many plants will sprout if we sow 20 g of seeds?
Joe spends
Joe spends 3 3/4 hours each day of the week doing his homework, but Mirabel spends only 2 hours each day of the week on hers. How long in a week does Joe spend on his homework more than Mirabel?
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

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