Maths practice for 12-year-olds - page 73 of 355
Number of problems found: 7081
- Wire cut 2
We can cut a length of wire into five pieces, each 24 cm long. How many pieces, each 15 cm long, can be cut from the wire? - Tracksuits
There are 250 tracksuits in a box. The shop sold 1/5 of the tracksuits on Monday, 1/10 on Tuesday, 2/5 on Wednesday, and the rest on Thursday. How many tracksuits did the shop sell on Thursday? - Glass sheet weight
What is the weight of a sheet of glass 75 cm x 120 cm and 2 mm thick if one cubic meter of glass weighs 2500 kilograms? - Ahsan
Ahsan has a large pizza. He gives 1/3 to his sister and 1/4 to his mother. What fraction of the pizza does Ahsan have left? - Paul spent
Paul spent 2/5 of his money on new shirts and a ½ of his money on new shoes. What fraction of his money has been spent? What fraction is still left? - Digit omission divisibility
In the number 123 456 789, omit the following: a) one digit to create the largest possible number divisible by 3 b) one digit to create the largest possible number divisible by 9 - Source voltage resistance
Determine the source voltage to which we must connect a 1k ohm resistance wire if a current of 40 mA is to flow through it. - Bulb filament resistance
A current of 0.2 A flows through a light bulb connected to a voltage of 6 V. What is the resistance of the red-hot filament? - Cycling trip fractions
The Malíkova family plans a 120 km cycling trip for 4 days. They want to cover a quarter of the entire route on the first day. The second day, 2/15, and the third day, 7/20, will cover the entire length of the trip. What part of the trip will they cover i - Guard meeting time
Three soldiers share a guard in the barracks. The first guard completed his errand in 8 minutes, the second completed his circuit in 10 minutes, and the third soldier completed his circuit in 12 minutes. How long before the three of them meet again if the - Paola
Paola has 3/4 of a candy bar. He wants to give 1/8 of the candy bar to each of his friends. How many friends can have 1/8 of the candy bar? - Cube tower colors
A tower of red cubes 13/72, blue 25/48, green 516. How many cubes are there in total? - Greatest common factor
What is the GCF of 8 and 20? - Cylinder can
The paint is sold in a cylinder-shaped can with a height of 24.5 cm and a diameter of 15 cm. A full can weighs 5.5 kg. How much does 1 liter of paint weigh? - Orchard tree rows
There are 390 trees arranged in rows in the orchard. How many rows are there if each row has the same number of trees greater than 30 and less than 40? - Simplify 12
Simplify {1/3 + 1/12} ÷ {2/3 - 5/8} - Instructor team pursuit
On the school ski trip, the team set off from hut A at 9:30 a.m. to hut B at a speed of 2 m/s. Fifteen minutes later, the instructor followed them at a speed of 3 m/s. At what time and distance from cabin A will the instructor catch up with the team? Plea - Joe spends
Joe spends 3 3/4 hours each day of the week doing his homework, but Mirabel spends only 2 hours each day of the week on hers. How long in a week does Joe spend on his homework more than Mirabel? - A cake
A cake has 46 slices. Harry ate 16 slices, and Jack ate 26 slices, Dave ate 2 & Mary ate 1 slice. What fraction of the cake is remaining? - The mass
The mass of a table is 6.4 kg, and the mass of a chair is 800 g. How many times is the table heavier than the chair?
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