Remember: A letter holds the place of a number, so the same steps work for any number.
Say it with a letter
1
Which one says 12 more than c?
12cc − 12c + 12
2
Which one says 5 less than n?
5 − nn − 5n + 5
3
Which one says 20 divided by b?
20 ÷ bb ÷ 2020b
4
z − 3 means 3 more than z.
TrueFalse
5
If n is 9, then 5 less than n is .
6
The table follows the rule 3x. What number goes in the empty box?
7
What rule do the rows of the table follow?
x + 32x + 24x
8
Join each phrase to its expression.
1the sum of w and 6
2the difference of w and 6
36 groups of w
4w shared by 6
Aw − 6
B6w
Cw ÷ 6
Dw + 6
Use a letter in a story
9
The tape has one part of y and one part of 8. Which expression tells how long the whole tape is?
8yy + 8y − 8
10
Each bag holds b marbles. Lin has 6 bags and 3 loose marbles. Which expression tells how many marbles Lin has?
6 + b + 39b6b + 3
11
3k and k + k + k mean the same thing.
TrueFalse
12
Which one says: subtract 4 from 15, then triple it?
3 × (15 − 4)3 × 15 − 43 + 15 − 4
13
If w is 20, then w ÷ 4 is .
14
Write "twice a number, plus one" using the letter n. Then try it with n = 4.
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