Maths practice for 11-year-olds. - page 195 of 223
Number of problems found: 4456
- Ages
John, Teresa, Daniel, and Paul have a summary of 56 years. Their ages are in a ratio of 1:2:5:6. Determine how many years each has. - Tripled square
If you tripled the length of the sides of the square ABCD, you increased its area by 200 cm². How long is the side of the square ABCD? - Bricks wall
There are 5000 bricks. How high wall thicknesses of 20 cm around the area, which has dimensions of 20 m and 15 m, can use these bricks to build? Brick dimensions are 30 cm, 20 cm, and 10 cm. - Physiological 2914
To complete valuable nutrition, a person needs vitamins that support physiological processes in the body and have a protective function. One of the most important vitamins is vitamin C. The recommended dose for adolescents is 70-90 mg per day. Calculate h - Equation: 2913
Solve the equation: 5-y / 3-6-4y / 5 = 0 - Purchase - store
Mom bought in the store 3 kg of sugar for Sk 19.50, two milk for Sk 13.10, bread for Sk 17.60, 20 eggs for Sk 2.55, salami for Sk 138.75, and oranges for Sk 42.80. She had 728.35 SK in her wallet before the purchase. How many crowns did she have left afte - Elephant 2911
The largest mammal and animal ever is the giant flounder, which weighs up to 160,000 kg. How many times is heavier than a weighing elephant 4,000 kg? - Cigarettes 2910
In 1983, the world produced 27 million cigarettes and cigars. If one person smokes 20 cigarettes a day, how many people smoked a day in 1983? - Population 2909
The world's population is growing by 94,867,200 each year. How much is it a) month, b) day, c) hour, d) minute? - Elephants 2906
In 1979, 1.3 million elephants lived in Africa. By 1989, their number had dropped to 600,000. On average, how many elephants have died each year during this period? - Water level
To cuboid-shaped poll, bottom size 2m and 3.5m, flows water at a rate of 50 liters per minute. How long will it take for water to reach a level of 50 cm? - Together 2904
The father is 56 years old, and his sons are 25 and 19 years old. How long will the father be as many as his sons together? - Kerosene 2897
What is the volume of kerosene if its weight is 8g? The density of kerosene is 780 g / l - Necessary 2895
From two wooden poles 240 cm long and 210 cm long, it is necessary to cut pegs of the same length as long as possible so that no residue remains. How many such pins can be cut? - Destination 2894
The passenger train is 60 km from the destination station and runs at a steady speed of 54 km/h. How far will it be from the destination station in 45 minutes? - Perimeter 2890
The perimeter of the square is 380 dm. What will be its area? - Chairlift 2886
Arrange the listed speeds from smallest to largest: Š - The sprinter will run 60 meters in 7 seconds, L - chairlift passes 180 meters in 2 minutes, A - the car travels 35 km in half an hour, H - hippo, during the attack, runs 50 meters in 60 seconds. - Calculate: 2884
Calculate: a / 2 + 3 * 4 - 5 * 4 + 3 b / 2 + 3 * (4 - 5) * (4 + 3) c / 2 + [3 * 4 - (5 * 4 + 3)] d / {2 + [3 * (4 - 5)] * 4} + 3 e / 2 + {3 * [4 - 5 * (4 + 3)]} - Beginning 2879
Juro, Fero, and Michael played bullets. In the beginning, everyone had the same number. In the first game, Juro won 4 bullets, and Fero 5 (that means Michael lost nine bullets). Michael won 7 balls in the second game, and Fero lost four. Michael lost thre - Distance 2877
On a map with a scale of 1:50,000, we measured the distance of places AB = 136 mm. The actual distance between cities A and B is:
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