Maths practice for 12-year-olds - page 99 of 355

Number of problems found: 7081

Fraction equality box
Write the assignment in a fraction. Fill in the number in the box so that the equality applies: (Write the result as a fraction in the base form.) 3 · ___ + 1/4 = 5/8
Number product fraction
Write one-sixth product of the numbers 4.8 and 0.4 as a fraction in the basic form.
Number square comparison
Calculate how many times the square of the number 1/100 is less than 1/1000. (numbers in fraction form)
Number comparison times
Calculate how many times ten-hundredths are less than five-tenths.
Consecutive number smallest
The sum of five consecutive natural numbers is 75. What is the smallest of these numbers?
Bucket
Kim and Joey share a 30-ounce bucket of clay. By the end of the week, Kim has used 3/10 of the bucket. Joey has used 3/5 of the bucket of clay. How many ounces are left in the bucket?
Ava filled
Ava filled three cups with different amounts of water: 225 ml, 370 ml, and 435 ml. Which of the following is the total amount of water, in liters, that Ava used to fill the three cups?
A seller
A seller sliced some pizza into eights. After selling 57 slices, seven slices were left. How many whole pizzas did the vendor slice?
Four-sided prism
Find the surface area and volume of a four-sided prism high 10cm if its base is a rectangle measuring 6cm and 1.4dm.
A rhombus 3
A rhombus has a side length of 6 centimeters and a height of 2 centimeters. What is the area of the rhombus in centimeters square?
Ron walked
Ron walked 3 3/4 km on Monday, 4 1/3 km on Tuesday, and 2 7/12 km on Wednesday. What distance did he walk in all?
Fabric length
Meg has 5 3/4 yd of fabric. She needs 1 1/8 yd to make a vest and 2 1/2 yd to make a skirt. How much fabric will be left for a jacket?
Beef burger resources
In the meat atlas published by the Jindřich Boll Foundation, it is stated that one kilogram of meat requires 6.5 kg of grain, 36 kg of feed mixture, and 15 cubic meters of water. Laura's slice of beef in the burger weighed 45 grams raw. How many kilograms
Consecutive number groups
Determine the group of numbers for which the following relations hold: a) The sum of the searched three consecutive even numbers equals 978. b) The sum of the searched four consecutive odd numbers equals 312.
Possums
1/3 were kangaroos, 2/5 were wallabies, and the rest were possums. What fraction of the animals were possums?
Container volume surface
The cube-shaped container has a surface area of 320 square centimeters without a lid. Calculate its volume.
Clearance - vacation
The Sobotkas checked their suitcases for clearance when they were leaving for their vacation. Their four suitcases had weights of 3 : 4 : 5 : 8. The total weight of all four suitcases was 60 kg. The maximum weight allowed for one piece of luggage is 25 kg
How many 21
How many tiles of 2m by 2m in size can fill the floor of a room with a size 16m x 12m?
The perimeter 8
The perimeter of a rectangle is 40cm. If its width measures 5cm, what is its area?
A piece 5
A piece of cloth is laid at the center of a table 80 cm long and 60 cm wide, and it leaves 5 cm all around. Find the area which is not covered by the piece of cloth.

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