Algebraic Thinking

Harris solved 8 math problems every day for 7 days.  How many problems did he solve all together?

• 45

• 32

• 64

• 56

Carrie sent 38 text messages last week.  Her sister sent 5 times as many text messages.  How many text messages did they send in all?

• 190

• 7

• 228

• 200

Alessa and Tiberius are eating raspberries. Alessa has eaten 100 raspberries. Tiberius has eaten r raspberries. If Alessa has eaten 10 times as many raspberries as Tiberius, choose the equation that shows how many raspberries Tiberius has eaten.

• r = 100-10

• r = 100 × 10

• r = 100 ÷ 10

• r = 100 + 10

Which equation matches the word problem:
Celine checked out 40 books from the library.  She checked out 4 times as many books as Brooke.  How many books did Brooke check out?

• 40 - 4 = b

• 40 ÷ 4 = b

• b + 4 = 40

• 4 ÷ 40 = b

Which equation matches the bar model?

• 21 = 3 x 7

• 21 = 4 x 7

• 21 = 4 + 7

• 21 = 3 + 7

What comes next in this pattern? 5, 10, 20, 40, ___

• 60

• 45

• 80

• 90

Conner wrote a book report that was 15 pages long. Mason wrote a book report that was 5 pages long. Which equation finds t, how many times longer Conner’s report was than Mason’s report?

• 15 x 5 = t

• 15 x 3 = t

• 15 ÷ 3 = t

• 15 ÷ 5 = t

What rule does this pattern follow?

• multiply by 2, subtract 2

• add 4, subtract 1

• multiply by 4, subtract 1

• multiply by 2, subtract 1

What unknown number makes this equation true?

6x4 = ?

• 20

• 24

• 10

• 2

What unknown number makes this equation true?

• 45

• 13

• 40

• 3