Remember: A letter holds the place of a number. Work out the brackets first, then multiply, then add.
Say it with a letter
1
Which one says: 3 more than twice a number n?
3n + 22n + 32(n + 3)
2
Which one says: twice the sum of a number n and 3?
2(n + 3)2n + 3n + 6
3
If n is 5, then 2n + 3 is .
4
If x is 4, then 3(x + 2) is .
5
A tape has three parts of x and one part of 5. Which expression gives the whole length?
3(x + 5)3 + x + 53x + 5
Tables, formulas and stories
6
What rule does the table follow?
x + 53x + 12x + 3
7
The table follows the rule 3x + 1. What number goes in the empty box?
8
2n + 3 and 5n are the same for every number n.
TrueFalse
9
Pizzas cost p dollars each. Join each story to its expression.
1Dad buys 3 pizzas and a drink for 2 dollars.
2Dad pays with a 20 dollar bill for 3 pizzas. How much change?
320 dollars is shared equally by p friends.
4Each pizza is cut into 8 slices. How many slices in p pizzas?
A3p + 2
B20 − 3p
C8p
D20 ÷ p
10
A rectangle is l long and 3 wide. Which expression gives the distance around it?
2l + 6l + 33l
11
Which pair of expressions are equal for every number n?
n + n and n²n + n and 2nn + 2 and 2n
12
Mia has 4 boxes with b stickers in each box and 7 loose stickers. If b is 6, how many stickers does she have?
13
Write a story that fits 5n + 2. Say what n stands for.
Scan the code at the top to mark this sheet on screenTake a photo of your answers or type them. It is marked for you automatically, and your score is kept.