Maths practice for 12-year-olds - page 49 of 354
Number of problems found: 7066
- Strawberry - mililiters
The volume of a strawberry smoothie is 1,250 ml. Convert this to litres and express it as a fraction. - Toy car collection
Martin has more than 50 and fewer than 100 toy cars in his collection. A fifth of them are trucks, an eighth are vintage cars, and the rest are models of modern passenger cars. How many toy cars does Martin have in his collection, and how many of them are - Subtracting Mixed Fractions
By how much is three and five sixths less than four and five ninths? - Solving for x Proportion
Find x such that: a) 2:5 = 8:x; b) x:28 = 4:7. - Distance - cities
Determine the actual distance between two cities if their distance on the map is 7.5 cm and the map scale is 1:60,000. - Detergent - dilution
A detergent is diluted in a ratio of 1:200. How much detergent is needed if 5 litres of water are used? - Number split
Divide 36 in the ratio 4:5. - Tickets 9/11
9 tickets cost 153 CZK. How much do 11 tickets cost? - Visitors
On the first holiday weekend, 1,250 visitors came to the swimming pool in Zdice. Sunday was less pleasant, so only two thirds as many visitors came as on Saturday. How many visitors came on Saturday? - Liquid - pouring
We need to pour the liquid from two cube-shaped containers into a single container. The original containers have edges of 0.7 m and 0.9 m. What will be the edge length of the combined cubic container? - Salesman 4
A salesman sold 3/5 of his potatoes on the first day and 2/3 of the remainder on the second day. What fraction of the potatoes did he sell over two days? What fraction did he have left? - Cost of a Cake
Half a cake costs €7 more than a quarter of a cake. How much does the whole cake cost? - 23 students
The ninth-grade students went on a field trip in a number such that when seated at tables of 4, 5, or 6, there was always exactly one seat left empty. What is the smallest number of students who could have participated in the field trip? - The denominator Find unknown denominator in fraction inequality: 6/5>41/_>8/7
- Aluminum - density
The density of aluminium is 2,700 kg/m³. Calculate the mass of an aluminium cube with a volume of 80 cm³. - Sifted sand
At a construction site, sand used in mortar is sifted through a sieve. In the process, 1/6 of the coarse material does not pass through and is discarded. Determine how many cubic metres must be brought in to obtain two cubic metres of sifted sand. - Balls 6
Jane has balls in her bag that can be divided equally among 4, 5, or 6 children. What is the minimum number of balls Jane could have in her bag? - Paving 2
A construction company needs 8 working days to pave the pavements on two streets if all 6 pavers work. However, only 4 pavers are available because the other two have been reassigned. How many working days will it take the group of 4 pavers to complete th - Shadow - an observation tower
How tall is an observation tower if it casts a shadow 9.6 m long at the exact same moment that a half-metre pole casts a shadow 30 cm long? - Box
A paper box is in the shape of a cube. 2,400 cm² of paper was used to make it (not including folds for gluing the walls). Calculate the volume of the box.
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