Maths practice for 12-year-olds
Examples and word math problems for 7th grade.Number of problems found: 6130
- Submarine and plane
A submarine is floating 900 m below the sea level. And at the opposite point, right above the submarine, an aeroplane is flying at the height of 4800 m above the sea level. What is the vertical distance between the two? - Division with a remainder
Find the least number which when divided by 8, 12, and 20 leaves a remainder of 5 in each case. - Two friends 5
Two friends, X and Y. X is 36 years old and Y is 16 years. In how many years X will be twice as old as Y? - Rectangle -S2
I need help calculating the area and perimeter of a rectangle with a length of 8 cm and a width of 5 cm.
- Triangle - same sides
Can the sides of a triangle have lengths of 11, 11, and 14? If so, what kind of triangle is it? - The radius 4
The radius of a sphere is r=9 cm. What is the volume of this sphere? Use π ≈ 3.14 and round your answer to the nearest hundredth. cubic millimeters - Pizza - sleepover
Petra and Amber had 9 pizzas delivered for a sleepover. Petra ate 2/3 of the pizzas. How many pizzas did Amber eat? Nothing was left. - A gardener
A gardener wants to fence a circular garden of diameter 21 m. Find the length of the 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 meter. - Britney
Britney made 12 1/4 bags of popcorn for a movie night with some friends. Together they ate 8 7/8 bag of it. How much popcorn was left? Write result as a fraction or a mixed number.
- Tomatoes 3
The price of tomatoes was $5.45 per kilo last week; this week, it has increased by $1.35 per kilo. Find the price of tomatoes this week. - Mowing lawn
Tara is mowing her lawn. She mows 3/5 of her 925-square-meter lawn before stopping to chat with a neighbor. How many square meters does Tara have left to mow after chatting with her neighbor? - 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 calculation 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 buckets 2 1/8 of apples. How many more buckets did Sally pick? - Prism - base and height
Find volume of the prism if the base area equals 20 inches² with the height is 12 inches. - Divide by mixed number
Solve and choose the answer written 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 used estimation to justify your thinking? 11/12 - 1/3 - 1/6
Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
