Maths practice for 12-year-olds - page 190 of 350

Number of problems found: 6986

Strawberries 16473
On the farm, twelve part-timers planned to harvest a crop of strawberries in 5 days. On the fifth day in the weather forecast, they reported rain. How many part-timers will they need to harvest the strawberries in four days?
Mom 6
Mom is throwing a party and buying cakes. Twice as many cakes for each adult as for each child. 1. What proportion of the cakes are for children if the number of adults at the party is twice as many as the number of children? 2. What proportion of the par
Surface - formula
Of the formula, S = the surface of the cuboid S=2. (ab+ac+bc) express unknown c. C =?
Block-shaped 16361
The block-shaped tank with bottom dimensions of 2.5 m and 2 m is empty. The inflow flows into the tank with 10 l of water per second. How high will the water be in the tank if it flows in for 3 minutes and 20 seconds?
Denominator 16341
Express a fraction in the basic form of what part of the day represents 5 hours and 30 minutes. Write the result in the form of a reader, denominator.
Measuring 16183
The load capacity of the truck is 10t. Will it carry 200 oak planks measuring 30 cm, 4 m, and 30 mm at a time if the weight of 1 dm³ of oak wood is 0.7 kg?
Profitable company
Three businessmen decide to open up their own company. They agree to distribute the yearly profits made in the same ratio as their initial investments. They invest R 50 000, R 75 000, and R25 000, respectively. The profit made by the company in the first
Marlon
Marlon drew a scale drawing of a summer camp. In real life, the sand volleyball court is 8 meters wide. It is 4 centimeters wide in the picture. What is the drawing's scale factor? Simplify your answer and write it as a ratio, using a colon.
Hectoliters 16023
100hl of water flows out of the tank through three pipes in 8 hours. How many hectoliters of water flow through four pipes in 10 hours?
The bakery
The bakery baked 325 cakes from 25kg flour. How many kilograms of flour do they need to bake 195 pieces of such cakes?
Filling 15983
Five 1800hl filling pumps in 3 hours for how long does a 4hl filling 1800hl tank?
Half-filled
A cylindrical pot with a diameter of 24 cm is half-filled with water. How many centimeters will the level rise if we add a liter of water to it?
Altitude difference
What is a climb permillage of the hill that is 4 km long and has an altitude difference of 6 meters?
Perimeters
A rectangle has a perimeter of 16p centimeters. It had a width of 2p centimeters. Each side of an equilateral triangle is 1/2 the length of the rectangle. Find the total perimeter of the rectangle and the triangle if p=8.
Packages 15923
Change ten packages of vanilla sugar, in a ratio of 3:2, in a ratio of 4:5, in a ratio of 2:3, in a ratio of 7:5
Circumference 15873
The sides of the triangle are in a ratio of 3:4:6. One side of it measures 21 cm. Calculate its circumference.
Magnitude of angle
What magnitude has an obtuse angle enclosed by the hands of clocks at 12:20 hours?
Wax candles
A company makes wax candles in the shape of a cylinder. Each candle has a diameter of 4 inches and a height of 7 inches. If the company used 7561.12 in³ of wax, how many candles did it make? Use 3.14, and do not round your answer.
Height of the cylinder
The cylinder volume is 150 dm cubic. The base diameter is 100 cm. What is the height of the cylinder?
Container with water
The cube-shaped container is filled with water to half its height. If we add 20 liters of water, the company will fill the container to three-quarters of its height. What is the volume of the whole container?

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