Maths practice for 13 year olds - page 8 of 334
Number of problems found: 6680
- Multiplier
What is the decimal multiplier to increase by 6.1%? - Percentage increase
Increase the number 400 by 3.5% - Equation - inverse
Solve for x: 7: x = 14:1000 - Divide 5
Divide number 288 by the following ratio of 3:4:5. - Simple equations
Solve the system of equations: 5x+3y=5 5x+7y=25 - Three-digit
How many do three-digit natural numbers not have the number 7? - Six years
In six years, Jan will be twice as old as he was six years ago. How old is he? - Proportion
Write the following proportion: Eight is to 64 as to 2 is to x - Reciprocal equation
Determine the root of the equation: 9/x-7/x=1 - Base, percents, value
The base is 344084, which is 100 %. How many percent is 384177? - Cuboid
Find the cuboid that has the same surface area as the volume. - Statements true/false
Which of the statements is not correct: ... - Hexadecimal number
What will be the hexadecimal number 303 as a decimal number? - Bridge
The bridge arc has a span of 72 m and height 5 m. Calculate the radius of the circle arc of this bridge. - Height
Calculate the height of the equilateral triangle if its perimeter is 48. - Squaring the Circle
Find the side of the square with the same area as the circle of radius 18. - Divisors
Find all divisors of number 432. How many are them? - Height
Is it true that the height is less or equal to half of the hypotenuse in any right triangle? - Powers
Is it true for any number a,b,c,d equality:? (a-b-c-d) 6 = (d+c+b-a) 6 - Percent calculation
Calculate 8% if 44% is 32.
Do you have homework that you need help solving? Ask a question, and we will try to solve it.