Maths practice for 12-year-olds - page 285 of 362
Number of problems found: 7228
- Number 3797
Which number is hidden behind x: 2 · x = 160.5 - Two rulers
We have two rulers. The scale interval on the first ruler is spaced 1 cm, and on the second is 15 mm. Rulers are attached to match the initial divider commas. What next dividers commas coincide? Find at least three cases. - Amount 3791
X + Y = 31835 X is the amount stolen by 1,2 and 3 Y is the amount stolen by 4 and 5 1. stole half of X, 2. half the rest and 3 more on top of that 3. stole 6801.5 4. He stole 1/9 of Y, which is 513 5. He stole the rest - Average speed
Michal left the house by car at a 98 km/h speed. He came into the goal place for 270 minutes. Determine the distance between the two places. - Hazelnuts 3786
Denis eats 12 hazelnuts in 1 day. How many more hazelnuts must he eat a day to eat 57 hazelnuts in 3 days if he ate the same amount of nuts every day? - Determine 3782
Determine the value of x if x0.5 = 6 - Together 3781
Milos would do the work himself in 5 hours. How much would it take Dan to do the job together in two hours?
- Weightlifter
Weightlifter lifted 75% of its weight. Determine how much weight is lifted when he weighs 132 kg. - Shots
Determine the percentage rate of keeper interventions if 32 shots don't catch four shots. - Evaluation
What is the result of the example (811/4): 4? - Pedestrian
Dana started at 10:00 from point A to point B. These points are 12 km away. Determine how fast Daniel went when place B arrived at 11:54. Speed express in km/h. - Painting rooms
If Daniel paints for three hours daily, he completes it in 7.5 days. How many hours a day would he have to work to finish the job 1.5 days earlier? - Grass
Peter and Stano lawn grass for 3 hours 12 minutes. How long would it take for Peter if Stano lawn grasses himself for 384 minutes? - Expression 3764
Find the value of the expression 9^x / 4y if x = 0.5 and y = 2.25. - Expression: 3761
Specify the value of the expression: 1-4:2-3
- Runner
Peter ran at a speed of 12.4 km/h. After 45 minutes of running, he had a hiatus. The track is 31 km long. How many kilometers is he still to run if he still runs at the same speed? - Reduction 3757
The goods became cheaper twice a row, first by 18% and then by 16% of the new amount. After this double reduction, it cost precisely 516 euros and 60 cents. Determine the flood amount of the goods. - Expression: 3754 Express the value of y in the expression: y / 9^(- 1) = 72
- Traveling 3752 The car was traveling at a speed of 112.5 km/h. Determine what distance he would have walked in 144 minutes if he had kept going at the same pace.
- Unknown number 17
Milada said, I am thinking of a number such that I evaluate expression x1/3; the expression's value would be 5. Which number is Milada thinking?
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