Maths practice for 12-year-olds - page 282 of 359
Number of problems found: 7167
- 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? - Exponent division
Specify the value of this expression: 34:38. - Above 100%
Find 340 percent of the numbers 45 and 55. - Number ratio
Change the numbers 34, 21, and 5.5 in a ratio of 5:2. - Exponent comparison
How many times is the number 1012 greater than the number 10-4? - Block dimensions
The volume of the block is 1000 cubic meters. Food b = 8m, food c = 12.5m. How long is the party and? - 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? - Block height
The block with a rectangular base measuring 18 cm and 11 cm has a surface of 1,556 cm². Calculate the height of the block. - Cylinder height
The rotating cylinder has a diameter of 14 cm and a surface of 1,186.92 cm². Calculate the height of the cylinder. - Equation value
What is the value of x in this equation: 2.5x: 4 = 7.5. x is a natural number. - Number increase Increase number 160 by: a) 25% b) 30% c) 150%
- Expression calculations
Calculate: a) 23 - [2.6 + (6 - 9) - 4.52] b] 12.25 + 2 [2.7 - (-0.5 + 0.3 * 0.6)] - Average temperature
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. - Square s3
Calculate the square's diagonal, where its area is 0.49 cm². And also calculate its circumference. - Average speed
The car left at 9:00 AM and arrived at the destination 144 km away at 11:00 AM. What average speed did he move? - Ball count
Roland has 490 balls. If he gave 145 bullets to Mark, he would still have 100 more bullets than Mark. How many balls did Mark have at the beginning? How many shots do they have together? - Dimensions of glass
An aquarium has dimensions of 64 × 50 × 45 cm and is filled to 5 cm below the upper edge. How many liters of water are in an aquarium? How many square meters of glass are needed to produce an aquarium? - Rails
18 m railway weighs 1260 kg. How much weighs 100 m of welded railways? - Unknown number
16% of the unknown number equals the square root of the number 25. Find this unknown number.
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