Maths practice for 11-year-olds. - page 211 of 230
Number of problems found: 4584
- Hurry - rush
I will travel from the school to the bus stop at an average speed of 7 km/h for 30 minutes. How fast do I need to go if I need to get there in 21 minutes? - Floating floor
In the new building, a floating floor worker is considered in each room. Thirty minutes lay 9 m² of the floor. How long did three workers lay the floor in four rooms with a total area of 90 m²? - Building base
Excavation for the building base is 350x600x26000. Calculate its volume in m³. - Expression 1
What is 7+8-(5×2)+5-4+(6×(5-3)+6)-(8+10)-7+6? - Jam cakes
Mom baked a third of plum jam cakes, one-third of cheesecakes, and 18 poppy. How many cakes she had bake? - For thinkings
The glass cube dives into the aquarium, which has a length of 25 cm, a width of 20 cm, and a height of 30 cm. Aquarium water rises by 2 cm. a) What is the volume of a cube? b) How many centimeters measure its edge? - Concrete tank
How many m³ of concrete is in the tank shape of a cuboid with dimensions of 2000 cm and, 5.6 meters, and 70 dm if the concrete takes up 3/7 of the tank?
- Peppers
In the box are yellow (a), green (b), and red (c) peppers. Their amount is in a ratio of 2:4:1. Most are yellow peppers and green the least. Calculate the peppers for each type if the total number is 70. - Rape
The agricultural cooperative harvested 525 ares of rape, of which received 5.6 tons of rape seeds. Calculate the yield per hectare of rape. - Toys
The toy shop sold the same number of balls for 62 CZK and skipping ropes for 34 CZK. Their income was 576 CZK. How many sold balls, and how many skipping ropes? - BMI index
Calculate BMI (body mass index, an index indicating obesity, overweight, normal weight, underweight) man weighing m = 85 kg and height h = 152 cm. The index is calculated according to the equation (formula): BMI = (m)/(h²) With the BMI index, it is possib - Swimming pool 4
The pool-shaped cuboid measuring 12.5 m × 640 cm at the bottom is 960hl water. To what height in meters reaches the water level? - Tailor
Tailor has an estimated 11 meters of 80 cm wide fabric. He will shape wholly seven rectangles measuring 80 x 150 cm, and no fabric will remain. How much fabric does he have? - Five-digit
Find all five-digit numbers that can be created from number 12345 so that the numbers are not repeated and then numbers with repeated digits. Give the calculation. - Class 8.A
Three-quarters of class 8A went skiing. One-third of those who remained at home were ill, and the remaining six were on math Olympic. How many students have class 8A?
- Grandmother and grandfather
Grandmother baked cakes. Grandfather ate half, then a quarter of the rest ate Peter, and Paul ate half of the rest. There were six cakes left for parents. How many cakes were made by the grandmother? - Land cost
The land is worth 33295 CZK. 1st owner has 5/15, 2nd owner has 4/15, 3rd owner has 1/5 4th owner has 1/5. How much CZK each of them will receive? - Math classification
There are 27 students in the 3A class. One-third got a B in math, and the rest got an A. Thus, how many students received a B in math? b) how many pupils received an A? - Rope
Peter has a long rope of 2 4/5 meters. Martin has a rope 20 cm longer. What length of ropes is achieved if the boys link ropes? - Cube basics
How long is the edge length of a cube with volume 1 m³?
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