Multiplication practice problems - page 94 of 116

Number of problems found: 2315

Coin ratio
Martin has metal coins saved up in the cash box. Crowns, two-crowns, and five-crowns. The ratio of crowns to five-crowns is 7:4, and five-crowns to two-crowns is 2:9. What is the ratio of crowns and double crowns?
Cells - guts
A single-celled organism under ideal conditions divides into two cells every 27 hours on average. How many would there be in 7 days if all the cells remained alive?
Cup cost
Mrs. Nováková paid 132 CZK for six cups. How many crowns will Mrs. Bartošová pay for ten identical cups?
Textbook cost
A mathematics textbook costs 56 CZK, and a workbook costs 37 CZK. How many crowns will the school pay for math textbooks and workbooks for 128 pupils?
Elements
If the number of elements is decreased by two, the number of permutations is decreased 30 times. How many elements are?
Hockey cards
Maroš received hockey cards as a reward after his certificate. The number of cards he received is twice the sum of the marks on his report card. Maroš has 8 subjects, and his average grade on his report card was 1.75. How many hockey cards did Maroš get?
Z7-I-4 stars 4949
Write instead of stars digits, so the next write of the product of the two numbers is valid: ∗ ∗ ∗ · ∗ ∗ ∗ ∗ ∗ ∗ ∗ 4 9 4 9 ∗ ∗ ∗ ∗ ∗ ∗ 4 ∗ ∗
Meteorite mass
The meteorite weighed 81 grams. That is nine times the mass of the second meteorite. What was the mass of the two meteorites together?
Number pairs
Five different positive numbers are written on the board. Determine the largest possible number of pairs formed from them in which the sum of the two elements equals one of the five numbers written on the board.
Melon sales
Alfonz grew 150 melons with an average weight of 2.35 kg. He sold them for € 1.50 per kg. How much did he earn? The result is rounded to the euro.
Multiples
Find all multiples of 10 that are larger than 136 and smaller than 214.
Factorial equation
Solve the equation: x!: 5 = 1008 The solution to the equation is a natural number.
Stamp collection
Juraj has started collecting stamps, and he already has 36. His friend Simon has been collecting stamps for 12 years. He has a hundred times more in his albums than Juraj. How many stamps does Simon have?
Security
The safe's security code is set with three dials. The first dial has five different letters, the second dial has the numbers 0 to 4, and the third dial has the numbers 5 to 9. One code can be set in approximately 1 second. How should the alarm be timed so
Class arrangements
There are 4 classrooms on the ground floor of the school building, which are numbered 1,2,3,4. First-year students A, B, C, and D will be placed in these classrooms. Write all possible class arrangements and their number.
The machine
The machine was in operation for nine-tenths (in a fraction) of eight hours of working time. How long has he been running?
Cake baking
The confectioner bakes four cakes for the whole shift. How many cakes do nine confectioners bake at the same time?
Evaluate expression
Evaluate expression using the BODMAS rule: 1 1/4+1 1/5÷3/5-5/8
Christmas trees
The seller of Christmas trees sold spruces for 220 CZK, pines for 250 CZK, and hemlocks for 330 CZK. In the morning he had an equal number of spruces, hemlocks, and pines. In the evening, he had sold all the trees and received a total of 36,000 CZK for th
If we
If we increase the unknown number by 4%, we get 780. Determine the unknown number.

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