Number Sense: (-9) - 9

In this Grade 7 lesson on Number Sense, you will practice solving problems like: "What is (-9) - 9?". Work through each problem carefully, use the hints if you need help, and check your answers. This builds your understanding of number sense step by step.

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🌍 Where you'd use this: Every time you check the score, count change, or figure out how long until something — that's this.

🤯 Fun fact: 🤯 Multiplication is just addition that got tired of writing things out.

🏆 Try this week: Time yourself on 10 mental math problems before bed for 5 days. Track your speed.

👨‍👩‍👧 At dinner: “What's the fastest way you can think of to solve 27 + 18? No paper.”

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All 7th Grade Number Sense lessons as a printable PDF, with worksheets and answer keys.

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Number Sense: (-9) - 9

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

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