Numbers - practice problems - page 5 of 308

Number of problems found: 6144

Multiple numerical bases
Find the value of x for which 312_four+52_x=96_ten . Hint: four, x, and ten are the base of the given number.
Using fraction
Ling is using fraction strips to add 2/3 and 7/12. The sum is one whole, plus how many twelfths?
Unknown r
Solve for r. (2)/(3) * r = 5 Write your answer as a fraction or as a whole or mixed number.
Solve 25
Solve for a in (a+8)/2-3(a+10)/5=1.
Equation 94
If 9 more than twice a number is 3 less than 3 times the same number. What is the number?
Express 71
Express 2 minutes 30 seconds as a fraction of 3/4 hours.
The sum 37
The sum of 5 and one-sixth of a number x is equal to 12 less than x plus 2/5. Find x.
A mixed school
In a mixed school, 5/9 of the pupils are boys. If there are 128 girls, how many pupils are there altogether?
Solve 20
Solve an equation with fractions: 5 1/2 - blank equals 23/4.
Twice the unknown
I am twice a number. If -8 is subtracted from me, the answer is 6. What am I?
What number
What number must be added to both the numerator and denominator of 3/5 to get 5/6?
Simple equation 12
Three times a number divided by 2 plus 5 equals 20. Find the number.
Common denominators
Find the common denominator 5/6 and 1/3
Two fractions
The fractions 10/3 and 10/X give the same answer when multiplied as they do when they are added. Find the value X.
Stephen
Stephen was thinking of a number. Stephen halves the number and gets an answer of 44.3. Form an equation with x from the information.
Complex equation
If c - d = 2 and c = 12 + 7 i, find d. Write the result in the form of a + bi.
Twice 3
Twice a certain number is added to 10. If the result is minus fourteen. Find the number
Fraction or irrational
If you double 1/4 of a certain fraction and multiply it by that fraction, the answer is 1. What is the fraction?
Last Friday
3/4 of the children were present at school last Friday. If there are 90 children present, how many children were absent?
The sum 50
The sum of five consecutive integers is 385. Which one of these five integers is prime?

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