Finding Unknown Values
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Finding Unknown Values
⚖️ Part 1: Balance the Equations
WALT: Find unknown values in simple equations using the balance strategy.
Remember: Both sides of an equation must be equal, just like a balanced scale!
a) □ + 4 = 9 Answer: □ = _____
b) 12 - □ = 7 Answer: □ = _____
c) □ + 6 = 15 Answer: □ = _____
d) 18 - □ = 11 Answer: □ = _____
□ + 8 = 13
20 - □ = 14
🧮 Part 2: Show Your Working
a) □ + 7 = 16
Answer: □ = _____
b) 25 - □ = 18
Answer: □ = _____
🌟 Part 3: Challenge Problems
My equation: ________________________
The unknown value is: _____
Sarah has some marbles in a bag. She adds 9 more marbles and now has 17 marbles altogether. How many marbles did she start with?
Write this as an equation: ________________________
Sarah started with _____ marbles.
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