Maths practice for 12-year-olds - page 92 of 350
Number of problems found: 6996
- Triangle 71404
Which three lines of a given length can be three sides of a triangle? A / 42mm; 22mm; 12mm; B / 5cm, 50mm, 6cm; C / 10m, 5m, 50dm; D / 2.1cm, 4.2cm, 1.9cm - Quadrilateral 71394
Sketch a grid of a quadrilateral prism with a rectangle of 1 cm x 3 cm and a height of 5 cm. - Cylinder-shaped 71384
My father installed a cylinder-shaped pool in the garden with a bottom diameter of 6 m and a height of 1.5 m. how many hectoliters of water can fit in the pool? How many m² of space must be cleaned after draining the pool? - Cuboid - surface area
Calculate the surface of a block whose two sides measure 12.8 cm and 162 mm and have a volume of 3,214.08 cm3 - Rectangular 71354
There is a rectangular plot of land in the schoolyard on which they want to sow grass. How many kg of grass seed will they need if the plot is 125 m long and 8.5 m wide? 1 kg of grass seed is needed for 25 m². - Dimensions 71344
How many tiles are needed to cover the bathroom floor, which has the shape of a rectangle measuring 4 m and 25 dm? The tiles are square with dimensions of 10 cm. - Calculate 71324
Calculate the volume of a cube with a surface area of 1,795.74 cm2 - An airplane 2
An airplane left Changi International Airport at 9 PM and flew 5841 km to Dubai International Airport. If the airplane flies at an average speed of 649 km/h, what is the plane's arrival time? A) 6 AM the same day B) 8 AM the same day C) 6 AM the next day - Two-digit 71134
How many natural two-digit numbers can we form from the digits 0, 1, 2, and 3 if we cannot repeat the digits in these numbers? - On Tuesday 2
On Tuesday, the temperature at 9 AM at Camden's house was -4°Fahrenheit. By 4 PM, the temperature at his house was 8°Fahrenheit. Which statement about the change in temperature from 9 AM to 4 PM at Camden's house is true? Is house true? A. The temperature - The temperature 29
The temperature at 6 P.M. is -11°Fahrenheit. During the night, the temperature rises by 7°F drops by 3°F, and rise by 5°F. What is the temperature after these changes? - Minus temperature comparing
At noon, the temperature was –25°F. At 8:00 PM, the temperature was –14°F. Did the temperature rise or fall? ... - Delta t
The temperature decreased 14°F between 10 PM and 4 AM. The temperature at 4 AM was 67°F. What was the temperature at 10 PM? - Yesterday 5
Yesterday, between noon and midnight, the temperature went down by 32.1°F. If the temperature was -6.6°F at midnight, what was it at noon? - Round to ones
What is 4.456 rounded to the nearest one? - My digits
My digits are 1, 2, 5, 6, and 7, but not in that order. My one digit is an even number. My tenth digit is 1. My hundredth digit is a number between 4 and 6. My thousandth digit is the digit with the highest value. I am less than 50000. - Branisko 70954
The Branisko tunnel has a length of 4975m. How long will a car pass through the tunnel if the speed limit is 80km/h? - A rectangular 7
A rectangular water tank has a square base of 90 cm on its side. If it is 300 cm high, how much water can it hold? - Change in temperature The morning temperature at the top of a mountain was –9°C (minus 9 degrees). In the afternoon, the temperature was 4°C. What was the change in temperature from the morning to the afternoon?
- Polya's method
On the way home from school, Dora likes to eat cookies. One daytime, just as she reached into her backpack, Swiper jumped into her path and grabbed her bag. It stole half of her cookies plus two more. A bit shaken, Dora continued home. Before she had a ca
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