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Questions in Grade Middle-school

[Answered] How do you write \(3 + 0.3 + 0.009\) in word form, standard form, and expanded form?

[Answered] Solve \(3x + 5 = 18\) for \(x\).

[Answered] What is 2 hours and 18 minutes as a decimal?

[Answered] Sara's savings account balance changed by -$34 one week and by -$67 the next week. Which amount represents the greater change?

[Answered] If a set of six numbers, including both rational and irrational numbers, is graphed on a number line, what is the fewest number of distinct points that need to be graphed?

[Answered] Explain what positive-negative square roots are. I'm in 8th grade and have a test soon, and I need help understanding this concept.

[Answered] A peregrine falcon can fly 322 kilometers per hour. How many meters per hour can the falcon fly? I know the answer is 322,000, but how do I write it out to explain?

[Answered] Xiao's teacher asked him to rewrite the sum \(60 + 90\) as the product of the GCF of the two numbers and a sum. Xiao wrote \(3(20 + 30)\). What mistake did Xiao make? How should he have written the sum?

[Answered] Use the distributive property to simplify the expression: 30 + 54

[Answered] Use the distributive property to simplify the expression: \[ 56 + 64 \]