Maths practice for 12-year-olds - page 4 of 347

Number of problems found: 6930

A gardener
A gardener wants to fence a circular garden with a diameter of 21 m. Find the length of rope he needs to purchase if he makes 2 rounds of fence. Also find the cost of the rope if it costs $0.40 per metre.
Britney
Britney made 12 1/4 bags of popcorn for a movie night with some friends. Together they ate 8 7/8 bags of it. How much popcorn was left? Write the result as a fraction or a mixed number.
Tomatoes 3
The price of tomatoes was $5.45 per kilogram last week; this week, it has increased by $1.35 per kilogram. Find the price of tomatoes this week.
Mowing lawn
Tara is mowing her lawn. She mows 3/5 of her 925-square-metre lawn before stopping to chat with a neighbour. How many square metres does Tara have left to mow?
A hill
Juan is walking up a hill at 130 3/4 feet above sea level when he kicks a pebble. If the pebble falls to the base of the hill, which is 18.5 feet below sea level, what is the vertical distance that the pebble fell?
The track 3
Patra runs around the track at school while training for a race. Each lap is 1/4 of a mile. On Wednesday she runs 9 laps. How far did she run?
Quarter of 60 grams
For a science experiment, students need to find 25% of 60 grams. John says, "I can find this by calculating 1/4 of 60." Andre says, "25% of 60 means 25/100 times 60." Do you agree with either of them? Show your reasoning.
Apples 31
Tim picked 1 1/10 buckets of apples, and Sally picked 2 1/8 buckets of apples. How many more buckets did Sally pick than Tim?
Prism - base and height
Find the volume of a prism if the base area equals 20 in² and the height is 12 inches.
Divide by mixed number
Solve and write the answer in simplest form. 1/6 ÷ 1 2/3
Subtraction equation
What should be subtracted from −3/5 to get −2/3?
Fractions - minus
What is the difference? Use estimation to justify your thinking. 11/12 − 1/3 − 1/6
Largest circle
If the largest possible circle is cut from an 8 cm × 4 cm rectangle, what is the area in cm² of the remaining portion?
Subtract 27
Subtract these mixed fractions: 7 2/3 and 3 1/9.
The remainder 3
The remainder is 31 when dividing a number by 45. What would the remainder be if the same number were divided by 15?
The product 17
The product of two fractions is 7/15, and one of the fractions is 7/9. What is the other fraction?
Sarah 7
Sarah bought snacks for her team's practice. She bought a bag of chips for $1.56 and a 20-pack of juice bottles. The total cost before tax was $33.96. Write and solve an equation to determine how much each bottle of juice cost.
Expression - two variables
The formula with two variables is given: y = 5x + 38. Solve for x.
Two cubes 2
Two cubes, each with a volume of 125 cm³, are joined end to end. Find the surface area of the resulting cuboid.
Decimal to fraction
What is 0.99 expressed as a fraction?

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