Translating into algebraic expressions.
A number is increased by 5.
What is x + 5?
Accept just x plus 5 for ELL learners.
Also accept other letters in place of x.
Solution to x + 9 = 10
What is x = 1?
Accept x = 1 for ELL learners.
Also accept other letters in place of x.
When John was 5 years old, his brother Jack was 11 years old. If John is 11 years old today, Jack's age is...
What is 17?
Accept 17 for ELL learners.
Do not solve!
When a number is added to 6 the result is 15.
What is x + 6 = 15?
Accept x + 6 = 15 for ELL learners.
Accept any other letter for x.
Solve!
Twice a number is 9 more than the number.
What is 9?
Accept 9 for ELL learners.
A number is decreased by 7.
What is x - 7?
Accept just x plus 5 for ELL learners.
Also accept other letters in place of x.
Solution to 2x + 10 = 60
What is x = 25?
Accept x = 25 for ELL learners.
Also accept other letters in place of x.
A number of children in a family which has five sons, and each of them has one sister.
What is 6?
Accept 6 for ELL learners.
Do not solve.
Twice a certain number is 7 more than then number
What is 2x = x+7?
Accept 2x = x + 7 for ELL learners.
Accept any other letter for x.
Solve!
The sum of 3 consecutive even integers s 132. The value of the smallest integer is...
What is 42?
Accept 42 for ELL learners.
The sum of a number and 9.
What is x + 9?
Accept x + 9 for ELL learners.
Also accept other letters in place of x.
Solution to 3x - 7 = 23
What is x = 10?
Accept x = 10 for ELL learners.
Also accept other letters in place of x.
A number of months with 28 days in them.
What is 12?
Accept 12 for ELL learners.
Do not solve.
The sum of 2 consecutive integers is 17.
What is x + x + 1 = 17?
Accept 2x + 1 = 17
Accept x + x + 1 = 17 or 2x + 1 = 17 for ELL learners.
Accept any letter for x.
Bonus question!
Why number to the power of 0.
What is 1?
Accept 1 for ELL learners.
Double a certain number
What is 2x?
Accept 2x for ELL learners.
Also accept other letters in place of x.
Solution to 2(x + 2) = 10
What is x = 3?
Accept x = 3 for ELL learners.
Also accept other letters in place of x.
When a number is multiplied by 2 and when 2 is added to the number, the answer is the same.
What is 2?
Accept 2 for ELL learners.
Do not solve.
The sum of 2 consecutive even integers is 18.
What is x + x + 2 = 18?
Accept 2x + 2 = 18
Accept x + x + 2 = 18 or 2x + 2 = 18 for ELL learners.
Accept any letter for x.
Solve!
If twice a number is subtracted from 11, the result is 4 more than the number.
What is 2 and 1/3?
Accept a fraction in any form.
Accept 1 and 1/3 or fraction in any form for ELL learners.
6 more than treble a number.
What is 3x + 7?
Accept 3x + 7 for ELL learners.
Also accept other letters in place of x.
Solution to 0.75x+21 = 36
What is x = 20?
Accept x = 20 for ELL learners.
Also accept other letters in place of x.
When Jessica was 10 years old, her sister Lucy was half her age. Jessica is 40 years old today and her sister Lucy is...
What is 35?
Accept 35 for ELL learners.
Bonus Question!
The smallest positive integer.
What is 1?
Accept 1 for ELL learners.
Solve!
Matt is 5 years olden than Kerry. In 7 years' time Kerry's age will be three quarter of Matt's age. Kerry's age is...
What is 8?
Accept 8 for ELL learners.