Writing algebraic expressions, step by step
“7 less than a number n” is n − 7, and almost every mark lost on this topic is the other one.
The question
Which expression is "7 more than a number y"?
Read it in order, then say which way round
y= a number
adding
y + 7
- The phrase is "7 more than a number y". The letter y is the number nobody has told us; everything else in the phrase says what to do to it.
- The words say we are adding.
- "more than" makes 7 bigger, so 7 is what is added to.
How it works.
- 01
The phrase is "7 more than a number y". The letter y is the number nobody has told us; everything else in the phrase says what to do to it.
- 02
The words say we are adding.
- 03
"more than" makes 7 bigger, so 7 is what is added to.