Multiplication - practice for 13 year olds - page 7 of 28
Number of problems found: 544
- Three 220
Three numbers are in a ratio of 2:3:4. Find the second number if their sum is 306. a. 68 b. 102 c. 136 d. 140 - One-nineth as percent
What is 1/9 as a percent? Round to the nearest hundredth. . - Reciprocal 13
What is the product of 5 2/3 and its reciprocal? - Residents
In a college dormitory, 1/10 of the residents are juniors, and 2/5 of the residents are sophomores. What fraction of the students at the dormitory are juniors and sophomores?
- Quotient of two fractions
If the quotient of 8/9 and 1/3 is subtracted from the product of 2 3/4 and 1 3/5, what is the difference? Write the solution as a mixed number or a fraction in the lowest terms. - Chessboard 80533
How many ways can one white and one black square be selected on an 8x8 chessboard if the selected squares cannot lie in the same row or column? - Grazing 80444
Forty sheep graze in the meadow. There are 4 times more whites than blacks. How many white and how many black sheep are grazing in the meadow? - The road
3/5 of a road is to be resurfaced. If the road is 2 3/5km long, what length in kilometers is to be resurfaced? - All-natural 80304
Determine the number of all-natural five-digit numbers in decimal notation that each have the digits 0, 1, 3, 4, 7.
- Five-digit 80104
How many different five-digit numbers with different digits can be made from the digits 0, 2, 4, 6, 7, 8, and 9? How many of them are divisible by 4? How many of them are divisible by 10? How many of them are even? - Determine 80084
Determine the number of all natural numbers greater than 2000 in which the digits 1, 2, 4, 6, and 8 occur at most once each. - Natural numbers
Determine the number of all natural numbers greater than 200 in which the digits 1, 2, 4, 6, and 8 occur at most once each. - Determine 79634
There are 12 apples and 10 pears in the basket. Peter has to choose either an apple or a pear from them so that Víra, who chooses 1 apple and 1 pear after him, has the greatest possible choice. Determine what Peter chooses. - Determine 79624
There are 5 roads from city A to city B, 3 from city B to city C, and 4 from city C to city D. Determine the number of paths that go from A to D via B and C.
- Four-digit 79614
Determine the number of all four-digit natural numbers in decimal notation in which the digit 0 is not present, and each of the remaining nine numbers occurs at most once. - Determine 79604
In the shoe cabinet, there is one pair each of boots, sandals, tennis shoes, and brown and black ankle boots. Determine how many ways one right shoe and one left shoe can be chosen from among them that do not belong together. - Supermarket 79504
The supermarket reduced the original price of the skis by 20% in January. At the beginning of February, they reduced the new price by another 29%. By what percentage were the skis' costs lower than the original price in February? - Value of a expression
Find the value 5(11)-10²-15+20 - Ulysses
Ulysses bought 6 1/2 kg of beef, 3 3/4 kg of pork, and 5 1/2 kg of chicken. If 1 kg of beef costs 400 pesos, 1 kg of pork costs 300 pesos, and 1 kg of chicken costs 170 pesos. How much change is left if he gave 5,000 pesos for his purchase?
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Multiplication practice problems. Maths practice for 13 year olds.