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7th Grade Number Sense
Version 47, changed by admin. 10/11/2007. Show version history
This is part of the K-7 Mathcasts 500 Project (Details)
| Standard + Sample Problem(s) | Mathcasts |
ExamView |
7NS.1.0 Students know the properties of, and compute with, rational numbers expressed in a variety of forms: |
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1.1 Read, write, and compare rational numbers in scientific notation (positive and negative powers of 10) with approximate numbers using scientific notation.  |
On
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1.2 Add, subtract, multiply, and divide rational numbers (integers, fractions, and terminating decimals) and take positive rational numbers to whole-number powers.  |
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1.3 Convert fractions to decimals and percents and use these representations in estimations, computations, and applications.  |
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1.4 Differentiate between rational and irrational numbers.  |
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1.5 Know that every rational number is either a terminating or repeating decimal and be able to convert terminating decimals into reduced fractions.  |
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1.6 Calculate the percentage of increases and decreases of a quantity. |
On Voicethread 7NS1.6 3 needed |
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1.7 Solve problems that involve discounts, markups, commissions, and profit and compute simple and compound interest.  | On Voicethread 7NS1.7 5 needed |
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2.0 Students use exponents, powers, and roots and use exponents in working with fractions: |
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2.1 Understand negative whole-number exponents. Multiply and divide expressions involving exponents with a common base.  | On Voicethread 7NS2.1 7 needed |
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2.2 Add and subtract fractions by using factoring to find common denominators.  | On Voicethread 7NS2.2 3 needed |
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2.3 Multiply, divide, and simplify rational numbers by using exponent rules.  | |
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2.4 Use the inverse relationship between raising to a power and extracting the root of a perfect square integer; for an integer that is not square, determine without a calculator the two integers between which its square root lies and explain why. 
| On Voicethread 7NS2.4 6 needed |
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2.5 Understand the meaning of the absolute value of a number; interpret the absolute value as the distance of the number from zero on a number line; and determine the absolute value of real numbers.  |
On Voicethread 7NS2.5 7 needed |
Keywords: addition
