On a rocky island shore, Emek and Luna found three stone paths leading inland. Their map said to follow the path with a value of 26. The first path showed 8 + 3 * 6, the second showed (8 + 3) * 2, and the third showed 40 - 4 * 5. Emek followed the order of operations and found values of 26, 22, and 20. Luna checked the first expression by multiplying before adding. Since 26 matched the map, they followed the first stone path and safely continued their island adventure.
Challenges
Challenge 1 of 5
Challenges
Challenge 1 of 4
Hint
When an expression has addition and multiplication, think about which operation comes first.
For the first path, which step should Emek do first to evaluate 8 + 3 * 6?
Add 8 + 3Multiply 3 * 6Multiply 8 * 3Add 3 + 6Correct! Multiplication is done before addition, so 3 * 6 comes first.
Try again. Use the order of operations to decide whether to add or multiply first.
Next🎉 Congrats! You got this question!
Hint
Multiply 4 by 5 first, then add 6.
A fourth stone path shows 6 + 4 * 5. What is the value of this expression?
Correct! The expression has a value of 26.
Try again. Remember to multiply before adding.
Next🎉 Congrats! You got this question!
Hint
Look at the parentheses around 8 + 3.
The second path shows (8 + 3) * 2. Why does Emek add 8 + 3 before multiplying by 2?
Addition is always done before multiplication.The largest numbers must be combined first.Operations inside parentheses are done first.Multiplication is always done last.Correct! Operations inside parentheses are completed before multiplication.
Try again. Think about what parentheses tell you to do first.
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🎉 Congrats! You finished this challenge set!
