Maths practice for 12-year-olds - page 82 of 349

Number of problems found: 6977

In a museum
There are 250 people in a museum 2/5 of the 250 people are girls. 3/10 out of the 250 people are boys. The rest of the 250 people are adults. Find the number of adults at the museum.
A triangle 5
A triangle has sides 15/23 feet, 28/34 feet, and 35/29 feet. What is the triangle's perimeter (the distance around the edges) in feet? Express your answer in mixed number form, and reduce if possible.
Rebecca
Rebecca needs to make a quilt. She has two pieces of fabric. One piece has 3 3/4 yards of fabric, and the other piece has 5 1/2 yards of fabric. How many yards of fabric does Rebecca currently have?
Solve 14
Solve fraction subtraction or addition: 1/2 - 1/4 = 4/6 + 2/3 = 5/8 + 3/12 = 1/9 + 2/3 = 8/9 - 7/12 = 11/12 - 3/8 = 2/3 - 2/7 = 3/4 - 3/9 = 3/8 - 1/6 = 3/5 - 4/8 = 2/6 - 1/12 = 3/8 + 3/4 = 5/6 + 4/9 = 1/4 + 3/10 = 6/20 + 4/25 = 6/6 + 1/3 =
Daniel 3
Daniel bought 1/2 kg of grapes and 2/3 kg of bananas for his children. How many kilograms of fruits did he buy in all?
Each side
Each side of a regular polygon is 5.2 m, and its perimeter is 36.4 m. Find the number of sides of a polygon.
A plumber 2
A plumber charges $29.00 for an hour of work. How much would he charge for a job that took him 1 3/4 hours to finish?
A stick
A stick is 12 4/7 meters long. If the worker cuts 3/8 of it into pieces, how long is the remaining stick?
Three people
Three people eat two pizzas altogether. Both pizzas are the same size. One person eats 2/3 of a pizza. A second person eats 1/2 of a pizza. How much pizza does the third person eat?
Vegetable garden
The four sides of a vegetable garden are 15 1/2 feet, 18 3/4 feet, 24 1/4 feet, and 30 1/2 feet. How many feet of fencing are needed to go around the garden? (write the answer as the whole number)
A farmer 6
A farmer made a square chicken coop of 6 1/3m. Determine the perimeter of the chicken coop. (Recall: perimeter =add all sides)
Square field
The perimeter of a square field is 64 m. Find the cost of cementing the field at the cost of 240 USD per square meter.
Medical trail
In a medical trial, there were 80 patients. 44 received treatment A, 50 received treatment B, and 20 received both treatment A and treatment B. How many patients did not undergo any treatment?
Compare fractions
Find which is the larger of the two fractions: 11/32, 7/24 by expressing the numbers as: a) fractions with the same denominator; b) decimals.
A farm 6
A farm has 20 animals. There are four chickens. What fraction of the animals are chickens? Express your answer as a fraction in the simplest form.
A welder
A welder has two pieces of half-inch pipe, one of length 2 3/8 ft and another of length 3 7/8 ft. What is the total length of the two welded together? How much must be cut off if she needs a total length of 4 3/4 ft?
1/12 fraction
Which statement about determining the quotient 1/12÷3 is true? A. Because 1/36×3=1/12, 1/12 divided by 3 is 1/36. B. Because 1/4×3=1/12, 1/12 divided by 3 is 1/4. C. Because 3/4×3=1/12, 1/12 divided by 3 is 3/4. D. Because 4/3×3=1/12, 1/12 divided by 3 is
Puppies
At an animal rescue, 5/6 of the animals are dogs. Three-fourths of the dogs are puppies. This model represents the fraction of the animals at the rescue that is puppies. What fraction of the animals at the rescue are puppies?
A pizza 4
A pizza shop charges $2.00 for a slice that is one-eighth of a pizza and $3.00 for a slice that is one-fourth of a pizza. One day the pizza shop makes six pizzas. How much more money will they make if they slice all the pizzas into eighths than if they sl
Mr Ambayen
Mr. Ambayen had 3 6/7 hectares of land. He planted 1/5 of it for coconut trees and 1/2 for avocado trees. What fraction of Mr. Ambayen's land was planted with trees?

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