Maths practice for 12-year-olds - page 91 of 362
Number of problems found: 7227
- Dolores
Dolores has some cookies and does not want to tell the exact number. Instead, she gives a riddle. First, multiply the number by 2. Then, add 2000 to the result. After dividing the answer by 2, the result is 1036. How many cookies does Dolores have? - Jeníček 71864
Ondro owes Janek 2 euros. Jeníček owes Maťa 3 euros. and Maťo owes Ondra 1.5 euros. How many euros will they have, more or less, if they pay their debts? - Azile
Azile had R150 (South African Rand - currency/money - code ZAR). He spent 2/5 of the money on a shirt, and then he spent 2/3 of the money left to buy a cap. a) How much did the shirt cost? b)How much did he have left after buying the shirt? c) How much di - Cylindrical tank
The cylinder-shaped tank with a diameter of 100 cm is 50% full and contains 7850 l of water. What is the height of the tank? - Calculate 71744
The triangle that connects on the dial: a) 2,7,9 b) 3,6,10 Calculate the size of the interior angles. - Something 71734
The teacher enters the class. Half of the pupils are looking for something, a third pass, and five are sitting. How many students are in the class? - Three-digit 71724
Use the product rule to find out how many three-digit numbers exist.
- Cylindrical 71714
How many hectoliters of water are in a cylindrical water tank with a base diameter of 3 meters and a depth of 60 cm? - The temperature 31
The temperature last night was -11°C; at noon today, it was 3°C. What is the difference between the temperatures? - Strawberry 71664
The opaque package contains five lemons, six apples, and three strawberry candies. At least how many sweets do we have to choose so that there is at least one strawberry among them? - Trent
Trent operates a hot dog stand. On Wednesday, he used two bags of hot dog buns. On Thursday, he used 1/5 as many hot dog buns as Wednesday. How many bags of hot dog buns Trent used on Thursday? - Measuring 71594
How much do we pay for the mesh around the garden, which has the shape of a square measuring 25m, and one ordinary meter of mesh costs 23 euros? - Beni has
Beni has a rectangular tub with a height of 50 cm, a width of 70 cm, and a length of 90 cm. He will fill the tub with water. The amount of water needed to fill 2/3 of Beni's tub is : - A rectangle 9
A rectangle measures 2 1/5 inches by 2 1/5 inches. What is its area? - Temperature 71534 In the morning, they measured the temperature at 5.7 degrees Celsius. What will the temperature be when: A) warms by 6.3 degrees Celsius B) cools by 0.9 degrees Celsius C) cools down by 9 degrees Celsius and immediately warms up by 18.8 degrees Celsius D)
- Temperature 71494
The temperature at the foot of the mountain is 17.5 degrees. At its peak, they measured a temperature of -12.7 degrees. What temperature difference will climbers overcome when overcoming the peak? - Dimensions 71454
I will reduce the poster with sides of 2.4 m and 1.6 m in a ratio of 3:8. What are its new dimensions? - Add to subtracting
Solve a simple equation with fractions: n-1/6=1/2 - Add quarter to a number
What is the total of 80 plus 1/4 of 120? - Raymond
Raymond is designing a 1-liter Tetrapak for milk. He knows that the rectangular base must be 50mm by 100mm. Therefore, he needs to make the height of the Tetrapak.
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