Maths practice for 11-year-olds. - page 129 of 222
Number of problems found: 4427
- Two-digit 8012
How much does the sum of three two-digit numbers change when we increase the first by 20, decrease the second by 10, and leave the third unchanged? - Consecutive 8004
The sum of five consecutive odd numbers is 35. What are these numbers? - Mixing Celsius and Fahrenheit
Add up three temperatures: 5°F +6°F +0°C - Cube root
For 13, Sam wrote 2891 instead of the correct cube number. By how much was he wrong? - Big number How many ones (digits) does the number 12345678910111213141516 ... 4647484950 contain? Did we write all natural numbers from 1 to 50 in a row?
- Contain 7986
The pool is 30 m long, 12 m wide, and 2 m deep. Can it contain 7,000 hl of water? If so, what is the level? If not, how much extra water is there? - Difference 7973
The opposite sum of numbers 12 + 13 adds the opposite number of their difference. Which of the following is correct? - The thermometer At 8:00 in the morning, the thermometer showed an outside temperature of 16.7 degrees. It rose by 2.6 degrees in two hours. What temperature did we have at 10:00?
- Expression plus minus Evaluate expression: (-1)2 . 12 – 6 : 3 + (-3) . (-2) + 22 – (-3) . 2
- Small 7967 How many can small cubes with a 1cm long edge cut from a cube with a 3cm long edge?
- Aquarium
Find how many dm² of glass we need to make a block-shaped aquarium (the top is not covered) if the dimensions are to be a width of 50 cm, length of 120 cm, and height of 8.5 dm. - Bus lines
At 5.00 in the morning, four buses left the terminal at the same time. The first bus has an interval of 15 minutes, the second 20 minutes, the third 25 minutes, and the fourth 45 minutes. How many minutes will all four buses leave the terminal at the same - Wood dividing
Which equation calculates the number of 1/3-foot pieces that we can cut from a piece of wood that is 7 feet long? - Pencil cut
Veronica cut a 10cm pencil. Each turn, the pencil was reduced by 0.2mm. She turned the pencil 100 times. How many centimeters has a pencil now? - Five mechanics
Five mechanics will make a car for some time. How many cars can 30 mechanics produce at the same time? - Orange juice
They have three types of juice in the buffet in the morning. /6 pcs orange, 4 pcs apple, 2 pcs currant/ In three hours, half of the currant juice and half of the apple juice were sold. No one had ordered orange juice by then. What part of the total supply - Cylindrical 7942
The cylindrical container should have a volume of 1 liter and a height of 15 cm. What will be its average height? - Ten boys
Ten boys chose to go to the supermarket. Six boys bought gum, and nine boys bought a lollipop. How many boys bought gum and a lollipop? - Schoolyard 7928
For Adam to walk around the schoolyard, he has to take 400 steps. What is the length of one side of the schoolyard if it is square and one step of Adam is half a meter long? - Football 7925
How many meters did the boys run when they circled the pitch, which is 100 m long and 60 m wide, three times during football training?
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