Maths practice for 11-year-olds. - page 157 of 222
Number of problems found: 4426
- Equilateral 5617
The flower bed in front of the house is an equilateral triangle with a side length of 2.5 m. Mom plants roses around it. How many rose bushes does mom need to plant if she plants the bushes at the same distance of 50 cm from each other? - Diamond
The diamond has a circumference of 48cm. Calculate the length of its side in dm. - Improvement 5606
The material in the factory was originally enough for two workshops for 20 days. After using the improvement proposal, it was enough for 25 days. How many days are enough for 5 workshops now? How many days can these workshops work longer from the saved ma - Unsatisfactory samples
In 1995, 360 fish samples were tested for contamination with foreign substances, and 138 samples were unsatisfactory. Write a fraction of what part of the fish did not meet the limits. - Much 5600
How much is 3/5 of 4/9 Kg? - 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? - Remainder 5594
What number did we divide by 55 if the ratio is 9.16 and the remainder is 0.04? - Pocket money
Honza receives pocket money and wants to buy something good with it. If he purchased four cakes, he would have CZK 5 left. If he wanted to buy five cakes, he would be 6 CZK short. If he had bought two pies and three doughnuts, he would have spent all his - Complete 5584 The two workers dug together for 6 hours. The first worker would do the work himself in 14 hours. How long would it take for the second worker to complete the task?
- Eight-thirty 5583
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 - Thunder and lightning
There was a glimpse of the sky, and we heard thunder in 4.5 seconds. The light spreads at 300,000 kilometers per second, so we can assume the flash instantly without delay. However, the sound's speed is much lower in the air, one-third of a kilometer per - Received 5578
Four boys passed the paper to harvest. John received 111 1/3 ducats, Michal 228 3/4, Peter 195 1/2 ducats, and Robert 146 1/4 ducats. How many kg of paper did each boy bring if they bought paper at 2.50 ducats per kg? - Equation 15
Solve equation with variables on both sides: - Minutes 5573
What takes longer? (a) 0.31 an hour or 31 minutes b) 0.25 hours or 15 minutes c) 0.85 minutes or 50 seconds? - Contains 5566
100g of yogurt contains 150mg of calcium. How many kg of yogurt would we have to eat to meet the daily dose of calcium 1000mg? - Distance 5565
The tourist section covered 14.5 km in 2.5 hours. What distance did he cover on average per hour? - Cross-section 5558
How many m² of sheet metal is needed to cover 4 m high chimneys with a rectangular cross-section with 2.5 m and 1.2 m dimensions? Add 1/20 to the folds. - Colored paper
Can a 4 cm, 3 cm, and 2 cm block be glued with a colored quarter of paper measuring 7 cm and 8 cm? - Block-shaped 5556
Excavated soil increases the pile's volume by 1/3. Can a 6 m, 2.5 m, and 1.8 m truck body be used to transport excavated soil to a 5 m, 2 m, and 1.5 m block-shaped pool? - Forest area
The Earth's surface is approximately 510,000,000 km². The forest area is about 38,000,000 km². Write a fraction in the basic form. What part of the Earth's surface is formed by the forest?
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