Maths practice for 12-year-olds - page 144 of 355
Number of problems found: 7085
- Sugar 8
Heather has 2 cups of powdered sugar. She sprinkles 3/5 of the sugar onto a plate of brownies and sprinkles the rest into a plate of lemon cookies. How much sugar does Heather sprinkle on the brownies? How much sugar does Heather sprinkle on the lemon coo - Road repairs
A 16 1/2 kilometer stretch of road needs repairs. Workers can repair 2 1/4 kilometers of road per week. How many weeks will it take to repair this stretch of road? - Anne eats
Anne eats 3/4 cup of raisins each day. How many total cups of raisins does Annie eat in 14 days? - Forty
Forty-five of the 80 students were girls. What is the ratio of girls to boys? - A triangle 2
A triangle has a base of 2 inches and a height of 2 3/4 inches. What is the area of the triangle? - The collector
Harry liked to collect old movies. On four different days, he bought two movies. On two other days, he purchased three movies each day. After that, he sold two sets of 2 movies. He figured out how many he had in total, and then he divided that total into - Billboard paper saving
How much m² of paper do we save if we do not glue one-third of the total area of the block-shaped billboard area with dimensions of 0.6 m, 0.7 m, and 1.4 m? - Pit volume increase
The pit for ecological waste has the shape of a regular quadrilateral prism. The supporting edge is 5 meters long. The depth of the pit is 3.5 m. The company enlarged the pit by extending the base edges by 50 cm. By how much m³ has the amount of waste tha - Circle diameter
The length of the circle is 87.92 cm. Calculate the size of the circle diameter. Express the result in centimeters. - Pool track width
What is the smallest width of the pool to be divided without rest into equally wide tracks, either 80cm or 1m, or 120cm? - Monument weight
A granite monument in the shape of a pyramid with a rectangular base will be placed in the city park. The base dimensions are 60 cm and 110 cm, and the pyramid height is 220 cm. The density of granite is approximately 2800 kg/m³. Calculate the weight of t - Number multiplication puzzle
I think the number. When I multiply it by four, subtract 12 from the product, then divide the difference by five, and I get the imaginary number again to the share of 4. What number do I think? - The volume 6
The volume of a sphere is given by the formula 4/3 πr³ (or 4/3 *pi *r³). The value of pi is approximately equal to 3.14. What is the volume of a sphere whose radius is 4 cm? (Round of the answer to the nearest hundredths. Type the value without the unit) - Grandmother
Stella's family traveled 5/8 of the distance to her grandmother's house on Saturday. They traveled 2/3 of the remaining distance on Sunday. What fraction of the total distance to her grandmother's house was traveled on Sunday? - Fraction of a Number
Suppose 1/2 of 1/3 of 1/4 of 1/5 of a number is 2.5. What is the number? - Box metal
We make a box in the shape of a cube with an edge of 12 cm. How many cm² of sheet metal do we need to create a box if we do not make the lid? - Three
Three pavers will pave the sidewalk in 4 days. How long does it take for two tiles to pave the same sidewalk? - Quadrilateral pyramid The regular quadrilateral pyramid has a surface of 260 cm² and a side wall area of 40 cm². Calculate the length of the base edge and the wall height.
- The rectangle
The rectangle has one side 8 cm smaller than the type. If you reduce the length by 6 cm and increase the width by 2 cm, you will get a square whose area is 400 cm². What are the original dimensions of the rectangle? - Car speed
The car covered the track 157.5 km in 2 hours and 15 minutes. How fast was he moving?
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