Calculator Countdown

3 Act Math

Act 1


1. How many times was the same number subtracted from 104 to get to 5?
2. Write down a guess.


Act 2

3. What information would be useful to figure this out?
4. Write down some questions you have in your head right now.
First Three Numbers


Act 3


Sequel

5. What other numbers could be used to subtract down from 104 to 5?


Common Core Standards
3.NBT.A.2
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
TEKS
3.5(A)
represent one- and two-step problems involving addition and subtraction of whole numbers to 1,000 using pictorial models, number lines, and equations

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