Maths practice for 11-year-olds. - page 114 of 222

Number of problems found: 4438

Difference 19273
When I subtract their difference from the sum of two arbitrary numbers, I always get twice the second number. Why?
Two-liter 19243
The barrel can be filled with just a two-liter measuring cup and a measuring cup for 3l, 5l, 7l, and 10l. What is the smallest volume this barrel can have?
One-quarter 19223
Fractions problem: There are 8 lanes in the pool, but divers have one-quarter of them. One-half of the remaining lanes are for fitness swimming. The other tracks are for games and jumps. How many lanes can people jump into the water?
Contain 19203
The water tank has the shape of a block. The inner length is 5.2 meters, the width is 2.4 meters, and the depth is 1.5 meters. If the tank is filled to 3/5 of its depth, how many liters of water does it contain?
Actions 19163
Peter went for a walk with his younger brother Jirka. Peter makes steps 70 cm long, and Jirka 45 cm. How many meters do their actions meet again if they walk on the same foot?
Delivers 19143
The pump delivers 34 hl of water per minute. How long does it take to fill the tank with a volume of 10m³? Write the result in hours and minutes.
Superman 19093
Superman has a jet car that drives at 720km/h. How many seconds will he reach the villain, who is 1600m away?
Calculate 19083
A) The wooden cube has an edge 14.7 cm long. Calculate its surface area and volume. B) The metal cube's inner edge is 13.6 cm long. How many cm of water can fit in it?
Cuboid-shaped 19063
Will 600 liters of solution fit in a cuboid-shaped tank with bottom dimensions of 2.5m and 1m and a height of 3dm?
Evaluate expression
If x=2, y=-5, and z=3, what is the value of x-2y
Triangle 18923
The sticker is shaped like a triangle with a side 5.4 cm long and 3 cm high. Most of such stickers can be made of 1 m square paper. Thank you
Number 18913
If we add its fifth to the given number, we get 36. What is the number?
Simultaneously 18813
2 ships sail simultaneously towards each other from places 2340m apart. I sail both ships at a constant speed. The first boat travels 56m per minute, and the second 74m per minute. Create an equation that corresponds to the assignment of the task if the u
The oil tank
The oil tank in the factory hall has the shape of a cylinder 8 m high and 4 m in diameter. It is three-quarters full. How much oil is in it?
An example
An example is playfully for grade 6 from Math, and I don't know how to explain it to my daughter when I don't want to use the calculator to calculate the cube root. Thus: The student made a cuboid from a block of 16x18x48 mm of plasticine. What will be th
Harvesters 18633
Rope wheat harvests seven combine harvesters in 5 days at total capacity. The weather forecast is required to complete the harvest in 4 days. How many combined harvesters had to be used together?
One-fifth 18623
One-fifth of the girls are honored in the class, and the remaining eight girls are doing well. How many girls are in the class?
Beet campaign
The beet field is being harvested. Beets are transported to 3 plants and three trucks. The first car returns to the field three times an hour, the second car after 30 minutes, and the third car five times an hour. All cars left at 8 in the morning. How ma
One-fifth 18523
The farmer crossed the daily plan to sow wheat by one-fifth and sow in an 11.4 hectare field. Calculate his daily schedule.
Students 18463
There are x girls and nine boys in the class. Write a formula for the number y of all students in the class. Express the number of girls from the formula.

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