Maths practice for 12-year-olds - page 218 of 348
Number of problems found: 6951
- Quarter 7438
How many times is a quarter of an eighth smaller than a third of a sixth? - Cube
The sum of all cube edges is 30cm. Find the surface area of the cube. - Volume - pool
The pool, 10.5 m wide, 50 m long, and 3 m deep, will be filled in 3 days. On the first day, 2/5 of the water volume flowed into it, and 1/3 of the rest on the second day. How many liters of water flowed into the pool on the third day? - Temperature increase
Suppose the temperature at 9:am is 50 degrees. What is the temperature at 5:00 pm if the temperature increases by 4 degrees Fahrenheit each hour? - Three-fifths 7413
The old mother baked 275 Christmas gingerbreads and kept three-fifths of them, dividing the rest among her children in a ratio of 3:4:2:1. How many gingerbreads did she give each? - Area of a circle
The circumference of the circle is 150.72 centimeters. Calculate the area of the circle. - Two-digit 7410
How many two-digit numbers can be written using the number 0,2,6? We can also repeat the digits in the number. - Centimeters 7406
Circles with radii r1 = 10 centimeters and r2 = 4 cm touch from the outside. What is the distance between their centers? - Eqn
Solve equation with fractions: 2x/3-50=40+x/4 - Food weight
Stacie is a resident at the medical facility where you work. You are asked to chart the amount of solid food that she consumes. For the noon meal today, she ate 1/2 of a 3-ounce serving of meatloaf, 3/4 of her 3-ounce serving of mashed potatoes, and 1/3 o - Two vans
At 8:30 AM, two vans leave at a parking area. They travel in opposite directions: one van travels at 48 km/h and the other at 62 km/h. At what time will the cars be 550 km apart? - Without 2
Tell whether the product 0.644 x 0.25 will be greater than one or less than 1 without multiplying. Explain how you know. Then, find the product. - 1.5 divided
1.5 divided by 1 = w divided by 4 - Walking
Lucie can walk about 3 4/5 miles each hour. How far can she walk in 2 hours 45 minutes? - Letters
ABC + DEF = GHIJ replace letters with numbers so that the sum is correct (different letters = different numbers) - Two workers
The first worker would complete the work in 8 hours, the other in 6 hours. After two hours of joint work, the worker left the first worker to a doctor, and the others completed the work themselves. How many hours worked did the other worker himself? - Difference 7359
The apartment on the first floor has an annual rent of 10% higher than the same apartment on the second floor. The difference in the yearly rent is €105. What are the annual rent for the apartment on the first floor and the apartment on the second floor? - Four-fifths of the pool
The rectangular pool, with bottom dimensions of 12 m and 25m, is 200 cm deep. The first faucet flows 2.4 hl per minute and the second 6 l per 1 second. How long will it take for the pool to be filled to four-fifths of its height? - Two trains
From station A, the freight train traveled at a speed of 40 km/h in 9 hours. When he drove 15km, the fast train started from station A in the same direction at 70km/h. When will the freight train catch up? - Boats
Three-quarters of boats are white, 1/7 are blue, and nine are red. How many boats do we have?
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