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Grade 5 · Printables

Letters for numbers

Algebraic expressions. Part of numbers to a million.

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Letters for numbers

Algebraic expressions · Alberta Grade 5 · maddyhelps.com

Name
Date

A letter stands for a number that can change. Put the given number in place of n and work it out. Then turn the words into expressions.

n + 7, when n = 5:
4 × n, when n = 6:
20 − n, when n = 8:
3 × n + 2, when n = 4:
n ÷ 5, when n = 35:
2 × (n + 3), when n = 5:
Five more than a number n
A number n multiplied by 3
8 less than a number n
Half of a number n

Tickets cost $6 each. An expression for t tickets, and the cost of 9

For the grown-up

Letters for numbers

12, 24, 12, 14, 7, 16. Words: n + 5; 3 × n; n − 8; n ÷ 2. Tickets: 6 × t, and 6 × 9 = $54.

3 × n + 2 when n = 4 is 14, not 18: the multiplying happens before the adding, as in Grade 4's order of operations. The brackets in 2 × (n + 3) are what change that.

Why this matters is on the numbers to a million page. More sheets