Maths practice for 11-year-olds. - page 136 of 222

Number of problems found: 4430

The lowest
The lowest temperature on Thursday was 20°C. The lowest temperature on Saturday was 12°C. What was the difference between the lowest temperatures?
The average
The average of one set of 4 numbers is 35. The average of another set of numbers is 20. The average of the numbers in the two sets is 30. How many numbers are there in the other set?
School club
The sports club at school is attended by boys and three fewer girls than boys. How many girls attend the circle?
Discount sale
After the discount, the computer costs 9600 CZK. How much did it cost when the shop reduced the price: a) by half b) by a third c) by one-fifth and then by 160 CZK
Fraction 7449
Find such a fraction to the fraction that their product is equal to 8/11, 4, 1/100, 13/4, 1/3
Fractions 4
How many 2/3s are in 6?
Restriction 7442
The figure shows two rows of hexagonal boxes that continue to the right without restriction. Fill in one field with one positive integer so that the product of the numbers in any three adjacent fields is 2018. Determine the number that will be in the top
Regularly 7439
Three steamers leave the port. The first regularly returns after three months, the second after four, and the third after six months. How long before they meet again in the port?
Bricks 7433
They drove X bricks seven times by car. If they always loaded the same number of bricks, how many bricks did they move at once?
Temperature increase
Suppose the temperature at 9:am is 50 degrees. What is the temperature at 5:00 pm if the temperature increases by 4 degrees Fahrenheit each hour?
Three-fifths 7413
The old mother baked 275 Christmas gingerbreads and kept three-fifths of them, dividing the rest among her children in a ratio of 3:4:2:1. How many gingerbreads did she give each?
Centimeters 7406
Circles with radii r1 = 10 centimeters and r2 = 4 cm touch from the outside. What is the distance between their centers?
Two vans
At 8:30 AM, two vans leave at a parking area. They travel in opposite directions: one van travels at 48 km/h and the other at 62 km/h. At what time will the cars be 550 km apart?
Difference 7387
From the sum of the unknown number and the number 17, subtract the difference of these numbers in that order.
Without 2
Tell whether the product 0.644 x 0.25 will be greater than one or less than 1 without multiplying. Explain how you know. Then, find the product.
Rectangular 7376
Two brothers wanted to have the same area of land. One chose a square plot with a side length of 60m. The second brother chose a rectangular plot of land with a side length of 80m. What is the width of the second brother's plot?
Walking
Lucie can walk about 3 4/5 miles each hour. How far can she walk in 2 hours 45 minutes?
One kilogram
The apple weighs 125 grams and is half an apple. How many apples weigh 1 kilogram?
Four-fifths of the pool
The rectangular pool, with bottom dimensions of 12 m and 25m, is 200 cm deep. The first faucet flows 2.4 hl per minute and the second 6 l per 1 second. How long will it take for the pool to be filled to four-fifths of its height?
Jose and Kaitlyn
Jose and Kaitlyn have a contest to see who can throw a baseball the farthest. Kaitlyn wins with a throw of 200 ft. If Jose threw the ball 3/4 as far as Kaitlyn, how far did Jose throw the ball?

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