Maths practice for 12-year-olds - page 242 of 307
Number of problems found: 6128
- Unknown number 7
16% of the unknown number is 21 less than the unknown number itself. Determine the unknown natural number. - Three children
Three children eat eight chocolates in 6 days. How many chocolates do six children eat in 18 days? - Percentage 3892
The bar contains 81g of coconut per 200g. What percentage of coconut does the bar have? - Chocolate 3886 Chocolate has 86% cocoa. Determine how many grams of cocoa are in 165-gram chocolate.
- Determine 3885
Determine the sum of the square roots of 81. - Equal 3883 What is equal to twice the sixth root of 729?
- Change the numbers in the ratio
Change the numbers 29, 38, and 43 in a 3:4 ratio. - Runner 2
Marian runs 12 meters in 8 seconds. How far would Marian run for 70 seconds if he still runs at the same pace? - Independently 3874
Josef would do the work himself in 5 hours. Josef and Michal would do the work together in 3.5 hours. Determine how long it would take Michal to do the job independently.
- Percentage 3872
Milos had to do 20 clicks. However, he only made 16. What percentage did he miss in completing the task? - Raspberries
Dano had 20 raspberries, and John had 90% more raspberries than Dano. Find the total number of raspberries Dano and Juraj have together. - Expression: 3865 What is the value of this expression: (0.640.5): 4
- Cancer
Of the 80 people, 50 people were ill with cancer. What percentage of people isn't ill? - Determine 3860 1/6 of y equals 8.6. Determine y.
- Determine 3857 Determine what 305% of number 98 is.
- Unknown number 6
Determine x if 1/6 of x equals 2/5 of the number 24. - Four-thirds 3852 Anton said: I have a natural number x. I'll get three times as much if I increase it to four-thirds. What number did Anton mean?
- Smaller 3848
Dano had a natural number in mind. If he changed this number to a 2:5 ratio, he would get the number 24 smaller. What number did Dano think? - Volume and area
What is a cube's volume with an area of 361 cm²?
Identify an unknown number whose 1/16 is 10.5, less than half of it.Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
