Maths practice for 10 year olds - page 40 of 64
Number of problems found: 1267
- Z5–I–4 MO 2017 Badminton
Eve and Mark were playing badminton and Viktor counted their rallies. After every 10 rallies, Viktor drew a cross (X). Then, instead of every 10 crosses, he drew a circle (O) and erased the corresponding 10 crosses. When Eve and Mark finished the game, Vi - Cakes
1/3 poppy cake, 1/3 apple, and 15 pieces of cheese. How many are the total cakes? - Number Five Times Smaller
Which number is five times smaller than the product of numbers 15 and 7 - Travel Time for Distance
Students want to get from Žilina to Bratislava for a concert by a well-known music group. The distance between these places is 200 km. The estimated average speed is 80 km per hour. How long will it take them to travel? - Orange weight
Nine oranges weigh as much as six grapefruits. One grapefruit weighs 300g. How much does one orange weigh? - Diamond
The diamond has a circumference of 48 cm. Calculate the length of its side in dm. - Doses
A child should receive a dose of 0.5 teaspoons of cough medicine every 12 hours. If the bottle contains 60 doses, how many days will the medicine last? - Photo upload
Five minutes before eight-thirty in the evening, Michal sent photos from his vacation in the Beskydy for retrieval via the Happy Foto e-shop. He had uploaded 1/10 (one-tenth) of photos in 3 minutes. Will he have time to upload and send the photos by 8 PM - Weekly earnings
Jirka, Petr, and Ondra earned 6480 CZK weekly at the gas station. Jirka received CZK 1958, Petr CZK 280 more than Jirka. How much did Ondra earn? - Aquarium ichthyosaurs
There are five huge aquariums on an island in Jurassic World. At least two and at most six ichthyosaurs swim in each of them, with a different number in each aquarium. How many ichthyosaurs are there in total in all the aquariums? - Expression puzzle
Add a plus sign minus times divided by two brackets: 5 5 5 5 = 15 - Pair combinations
From 5 girls and four boys, we have to choose one pair, boy and girl. List all the pairs in which the individual boys will be. Attention, these are four examples. How many pairs are there? - Card sum puzzle
On the table lay eight cards with the numbers 2, 3, 5, 7, 11, 13, 17, and 19. Frank chose three cards. He added the numbers on them and found that their sum was 1 more than the sum of the numbers on the remaining cards. Which cards could have been left on - They held
A 100-metre race was held at school. Peter, Jan, Andrej, Radko, and Miro advanced to the final. Peter finished either second, third, or fourth. Jan was not the winner. Andrej finished one place behind Jan. Radko did not finish in second place. Miro finish - Number unknown Adela thought of the two-digit number. She added it to its ten times and got 407. What number does she think?
- Mystery number
A mystery number is between 800 and 920. No digits are the same. The difference between the numbers is 5. What is the mystery number? - Stone squares
Draw two squares made of stones. They use a total of 34 stones. What are the side lengths of the squares? - Fridays
Friday 13th is in 4 days. What day is today, and what day is it? - Strip length
What would be the length, in kilometers, of a strip assembled from one million squares, each with a side length of 1 mm? - 1000 km length
1000 km, how much is cm?
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