Maths practice for 12-year-olds - page 243 of 347
Number of problems found: 6932
- Age Twice Sister Ago
I was twice as old as my sister four years ago. How old am I today? - Fraction missing number
What number should be added instead of the question mark 25/45 =? / 24. And how do we find out? - Fractions
Three-quarters of an unknown number is 4/5. What is 5/6 of this unknown number? - Individual
On a hill behind Terchová, there is a sheepfold where a shepherd lives. He divided his two hundred sheep into 4 groups in a mysterious way: If he had 4 more sheep in the first group, 4 fewer in the second, 4 times more in the third, and 4 times fewer in t - Candies Eaten Fractions
Walter ate 1/5 of the candies. Mark ate 1/3 of the sweets, and Susan ate 21 candies. How many candies were together? - Motion against
From two places 36 km apart, a pedestrian and a cyclist will go straight opposite each other. How long will they meet if the speed of the pedestrian is 4 km/h and the cyclist 12 km/h? - Cost of Wooden Boards
How much do we pay for 15 pieces of boards 6 m long, 15 cm wide, and 25 mm thick if 1 m³ of boards costs 130 €? Round the price to the whole of €. - Field Plowed Hectares
Tractors plowed a field of 15 3/4 ha. It plowed 3 1/3 ha in the morning, 2 5/6 ha in the afternoon, and 4 1/4 ha at night. How many hectares were left to plow the next day? - Ermine - road
The Ermines had been waiting for years for the road in their street to be repaired. Little Jirka did not let this event pass him by and watched everything carefully from the window. On the road 120 m long and 6 m wide, trucks with asphalt began to pull up - Storing Cubes in Boxes
Eric cleans up after playing with a cube-shaped cube with an edge of 14 cm. He cleans them into three boxes. How many cubes can fit in: 1) cuboid with edges 4.2 dm, 5.6 dm, and 7 dm? 2) a cube with an edge of 560 mm? 3) cuboid with edges 0.98 m, 2.8 dm, a - Babysitting
Susan's hourly rate for babysitting is directly proportional to the number of children she watches. She charges $4.50 for three kids. How much would she charge for babysitting five kids? - Sharing Money Equally
Adam, Cyril, and Boris have a total of 102 CZK. How many crowns does Adam have, how many Boris and how many Cyril, if all three have the same when: a) Adam gives three crowns to Cyril b) Boris will give half of his money to Cyril c) Adam will give a third - Mug in Cube Box
A cylindrical mug is packed in a 1-liter cube paper box. The mug is in close contact with all the walls of the cube. What volume is my mug? - Ratio Convert Basic Form
Convert the ratio to the basic form: 3.5:70 - Office Carpet and Rails
The worker bought a new carpet with moldings for the square office. The rails for this office cost CZK 1,500; 15 CZK per 1 m. How many m² does this office, in which six people work? - Change Number in Ratio
Change the number 132 in the ratio of 7:3. - Divide Number Ratio Three
Divide the number 600 by the ratio of 9:10:11 - Bus time
The bus runs 6 km in 9 minutes. How many minutes will the bus go to a place 42 km away if it doesn't stop along the way? - Scale of the map
The distance between the two cities is actually 30 km, and the map is 6 cm. What is the scale of the map? - Map Distance in Centimeters
How many cm on a map with a scale of 1:150,000 will two cities be separated when their distance is 30 km?
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