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Grade 9 · Math · Algebra 1

9th grade Evaluate expressions with fractions, decimals, absolute value and roots worksheet

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Evaluate expressions with fractions, decimals, absolute value and roots

Grade 9 Math Worksheet - Building Confidence

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Circle the best answer, or write your answer on the line.

  1. Ari's card (guarded by one proud pencil) shows 6x + 1/2. Put in x = 2/3: 6 × 2/3 + 1/2. What is its value?

  2. Bo's card shows 4x + 1/3. Put in x = 3/4: 4 × 3/4 + 1/3. What is its value?

  3. Esme's card shows 10x + 1/4. Put in x = 3/5: 10 × 3/5 + 1/4. What is its value?

  4. Jun's card shows 8x + 2/3. Put in x = 5/8: 8 × 5/8 + 2/3. What is its value?

  5. Luz's fraction has 2x + 1 on the top and 5 on the bottom. Do the whole top first. What is its value when x = 7?

  6. Noah's fraction (with a tiny hat on top) has 6x − 4 on the top and 10 on the bottom. Do the whole top first. What is its value when x = 4?

  7. Pia puts x = −2 into |x − 6| (while a snail watches). The first line is (−2) − 6. Work the inside, then the bars. What is the value?

  8. Ren puts x = −7 into |x + 3|. The first line is (−7) + 3. Work the inside, then the bars. What is the value?

  9. Tala puts x = −6 into |x + 2.5|. The first line is (−6) + 2.5. Work the inside, then the bars. What is the value?

  10. Esme's card shows √x − 2. The root asks which number times itself makes x. What is its value when x = 64?

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9th grade Evaluate expressions with fractions, decimals, absolute value and roots worksheet – printable
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About this worksheet

Evaluate expressions with fractions, decimals, absolute value and roots. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

  • I can put a fraction, a decimal or a negative number into an expression and find its value.
  • I can work out the whole top and the whole bottom of a fraction bar before I divide.
  • I can evaluate |x − 6|, a square root, a cube root, and a big fraction with fractions inside.

Standard: state-only (supports A-SSE.A.1; no CCSS standard asks for evaluating as such)

Words to know

substitute: Put a number in the place of a letter.

fraction bar: Works like brackets: do the whole top and the whole bottom first.

square root √: The number that times itself makes the number inside.

cube root ∛: The number used three times in a product that makes the number inside.

Common mistakes

Your child multiplied both the top and the bottom of a fraction by a whole number.

Your child added a whole number to the top of a fraction only.

Your child divided only the last piece on top of a fraction.

What to say

Ask: what is 3 groups of 2/3?

Ask: is 4 and a half the same as 5 halves?

Ask: which numbers does the fraction bar divide?

Questions parents ask

What is the most common mistake with evaluate expressions with fractions, decimals, absolute value and roots?

Your child multiplied both the top and the bottom of a fraction by a whole number.

How can I help my child with evaluate expressions with fractions, decimals, absolute value and roots?

Ask: what is 3 groups of 2/3?

Are these 9th grade math worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

More algebra 1

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