Maths practice for 12-year-olds - page 77 of 355

Number of problems found: 7081

Find two 4
Find two fractions between 1/4 and 2/3. How do you know you are right?
Isosceles ditch
A ditch with a cross-section in the shape of an isosceles trapezoid with bases of 3 m and 5 m and arms of length 2 m is 2.5 meters deep and 10 meters long. How many cubic meters of soil did they have to excavate when digging it?
Garden grass portion
We planted 1/3 of the garden with flowers and 2/5 with vegetables. The rest we sowed with grass. What part of the garden is sown with grass?
Cube wall coloring
We color a wooden cube with an edge length of 3 cm so that three walls are blue, three are red, and no two opposite walls are the same color. Cut the cube into 1 cm³ cubes. How many cats will have at least one red wall and at least one blue wall?
Car motorcycle distance
A car travels 11,000 m in one minute. A motorcycle travels at a speed of 330 m in 11 seconds. Which of them will travel the greater distance in 1 hour of driving?
The area 2
The area of a rectangular piece of tablecloth is 3/4 m². Its width is 3/10 m. What is its length?
Three friends
Chad and his two friends are picking blueberries at a local farm. Chad picked 2 1/2 pounds of blueberries, and one of his friends picked 1 3/8 pounds. If they ended up with a total of 5 1/4 pounds, how many pounds did Chad's other friend pick? Express you
Relay race time
The children ran the school relay four times around the schoolyard. The shortest measured time was 2 minutes, and the longest was 3 minutes. In what was the longest and shortest time could the relay run around the yard?
Bottles
At a pizza party, James and his friends drank 1 2/3 bottles of sprite, 1 5/8 bottles of Cola, and 4 2/6 bottles of Kofola. How much soda did they drink in total?
Wood into pieces
Gwen has a piece of wood that is 8.25 feet in length. Gwen needs to cut pieces that are 0.75 feet in length. How many pieces can Gwen cut from the original piece of wood?
Hexagonal prism volume
A perpendicular hexagonal prism was created by machining a cube with an edge length of 8 cm. The base of the prism is created from the square wall of the original cube by separating 4 identical right triangles with overhangs of lengths 3cm and 4cm. The he
Write 5
Write number sentences for each of the following: Three times a certain number increased by 5.
School boy girl
The school has 275 pupils, and there are fifth more boys than girls. How many girls are there in the school?
A 12-mile
A 12-mile biking trail has a trail marker every 1/6 of a mile. How many markers are on the trail?
Bread 5
Susan ate 3/7 of a loaf of bread in the morning. What fraction of the loaf is remaining?
Curtains and bed cover
Grandma bought 16 3/4 meters of cloth. She uses 8 1/2 meters for curtains and 7 1/2 meters for bed covers. How many meters of clothing were not used?
Wood board density
Calculate the density of wood, which is a board with a volume of 0.2 cubic meters weighing 100 kg.
City path count
There are 5 roads from city A to city B, 3 from city B to city C, and 4 from city C to city D. Determine the number of paths that go from A to D via B and C.
Four-digit natural numbers
Determine the number of all four-digit natural numbers in decimal notation in which the digit 0 is not present, and each of the remaining nine numbers occurs at most once.
Diet liquid solid
The ratio of the number of liquids to the solid components of the diet in (kg) should be about 7:2. Show in a rectangular coordinate system the dependence of the amount of a solid food component on its total amount.

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