Maths practice for 11-year-olds. - page 177 of 222
Number of problems found: 4421
- Unknown number 11
What number, when increased by three, equals three times itself? - Number property
Seven times the number minus 3 is as big as three times the same number minus 7. Which number has this property? - Horse pens
The cowboy has 25 horses in two pens. He transferred 5 from the first to the second, then sold 7 horses from the second. How many horses were originally in the first pen? In the first enclosure, there were just 2 times more horses than in the second enclo - Safe codes
Mr. O. came up with two codes for the vault, which he alternates after a week. Both codes have the product of the digit 120. In an even week, it uses the smallest possible number as the code with this property. In the odd week, the largest. No number 1 in - Ornamental shrubs
Children committed to planting 240 ornamental shrubs. Their commitment, however, was exceeded by 48 shrubs. Write the ratio (r) of actually planted shrubs and commitment by the lowest possible integers a/b. - Solving the equation
x + 6/6 -x-3/3 = 3/4 - Rational equation
x-2 / x-1 -2 = x + 1 / x-2 - Glass weight
How much does the glass of a display cabinet with dimensions of 3 m x 2 m and a thickness of 10 mm weigh if the weight of the glass is calculated based on its specific volume weight, which is 2600 kg/m³? Therefore, the weight of one sheet of glass measuri - Norm
Three workers planted 3555 seedlings of tomatoes in one day. The first worked at the standard norm, the second planted 120 more seedlings, and the third was 135 more than the first worker. How many seedlings were the standard norm? - Two machines
Performances of two machines are in a ratio of 7:12. A machine with less power produced 406 pieces of products per shift. a) How many pieces are produced per shift second machine? b) How many pieces produced two machines together for five shifts? - Orchard
3/5 of the trees in the orchard are apples, 1/3 are cherries, and the remaining five trees are pears. How many trees are in the orchard? - Bicycle gears
The toothed wheel on the bicycle pedal has 40 teeth, and the wheel on the rear wheel has only 16 teeth. How many times does the rear wheel turn if the pedals rotate 50 times? - Egg boiling
One egg is boiled for 5 minutes. How many minutes will five eggs be cooked? - Equation solving
Solve the equation: (4x / 2.5x) + (2.4: x) = 3.1. x is a natural number. - Exponent division
Specify the value of this expression: 214:218. - GCD and LCM Specify: a = D (240,320) b = n (40.64)
- Fabric package
They sold one-fifth of the fabric package in the store, and 44 m of fabric remained in it. How many meters of fabric were in the package? - Apples and pears
Mom divided 24 apples and 15 pears among the children. Each child received the same number of apples and pears - the same number as their siblings. How many apples (j=?) and pears (h=?) were received for each child? - Candy count
How many candies does Renee have in the box? There are fewer than 50. She can divide them evenly among either five or six friends, and still have one candy left for herself and her brother. How many candies are in the candy box? - Circle waste
Calculate the percentage of waste when we cut out 4 of the largest possible circles from a square sheet with sides of 1 meter.
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