Maths practice for 12-year-olds - page 281 of 351
Number of problems found: 7003
- Circumference 3991
The circumference of the vehicle's front wheel is 1.44 m, and the circumference of the rear wheel is 2.56 m. How long did the vehicle travel when the front wheel made 560 more revolutions than the rear? For the unknown, choose the number of revolutions of - Candies 3989
How many candies does Renata have in the box? There are less than 50 of them. She can divide them fairly among her five or even six friends and still have one candy left over for her and her brother. How many candies are in the candy box? - Republic 3988
The Czech Republic has an area of 78866 km². If this area were the area of a square, it would have a side of 280.83 km. How long before we go around this square at 50 km/h? - Percentage 3980
Calculate the percentage of waste when we cut out 4 of the largest possible circles from a square sheet with sides of 1 meter. - Increased 3979
The cost of the coat, 1500kc, was reduced by 20% and increased by 20% after a week. What is the price? - Numbers 3973
The average of the two numbers is 74. One of these numbers is a) 62.5 b) 102 specify the second number - Cheetah
The cheetah elapses 150 m for 5 seconds, the eagle reaches speeds up to 230 km/h, and the dolphin swims 1.2 km per minute. Which animal is the fastest and slowest? The results are written as meters per second (m/s). - Customer
A customer purchased three (3) writing pads from a store. She receives a k9.70 change from a k10.00 note. How much does its writing pad cost? - Expression: 3967
Specify the value of this expression: 34:38. - Above 100%
Find 340 percent of the numbers 45 and 55. - Numbers 3965
Change the numbers 34, 21, and 5.5 in a ratio of 5:2. - Greater 3964
How many times is the number 1012 greater than the number 10-4? - Rectangular garden 4F
The fence around the rectangular garden measures 264 2/3 m. The length of the garden is 79 1/4 m. How wide is the garden? - Rectangular 3957
The block with a rectangular base measuring 18 cm and 11 cm has a surface of 1,556 cm square. Calculate the height of the block. - Calculate 3956
The rotating cylinder has a diameter of 14 cm and a surface of 1,186.92 cm square. Calculate the height of the cylinder. - Equation: 3955
What is the value of x in this equation: 2.5x: 4 = 7.5. x is a natural number. - Increase 3946 Increase number 160 by: a) 25% b) 30% c) 150%
- Calculate: 3944
Calculate: a) 23 - [2.6 + (6 - 9) - 4.52] b] 12.25 + 2 [2.7 - (-0.5 + 0.3 * 0.6)] - Temperatures 3942
The following temperatures were measured every 6 hours from 6 to 24 hours: -2.2 C, 2.1 C, 5.4 C, 3.9 C, 0.7 C, -1.9 C, -3.8 C. Calculate the average temperature from 6 to 24 hours. - Lcm simple
Find the least common multiple of these two numbers: 140 175.
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