Unit 9 Practice Assessment

Is the statement true or false? Circle the correct answer.

The total number of tens in the sum of 234 + 142 is 7.

• True

• False

How can you decompose one addend in the problem below? Choose all the correct answers.

356 + 491

• A. 356 + 400 + 90 + 1

• B. 356 + 400 + 9 + 1

• C. 300 + 50 + 6 + 491

• D. 300 + 5 + 6 + 491

What addition strategy is shown?

• A. adjust addends

• B. decompose both addends

• C. decompose one addend

• D. skip counting

Xavier has 325 erasers. Then he buys 10 more erasers. How many erasers does Xavier have now?

• A. 326 erasers

• B. 330 erasers

• C. 335 erasers

• D. 425 erasers

How can you adjust the addends?

198 + 404

• A. 200 + 406

• B. 200 + 402

• C. 202 + 400

• D. 194 + 200

Which equations need regrouping? Choose all the correct answers.

• A. 271 + 558 = ?

• B. 416 + 185 = ?

• C. 332 + 427 = ?

• D. 245 + 603 = ?

What addition strategy is shown?

• A. adjust addends

• B. decompose both addends

• C. decompose one addend

• D. skip counting

A toy store has 348 dolls and 100 teddy bears. How many dolls and teddy bears does the toy store have?

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OFF

This month, Jana spends 257 minutes at softball practice and 166 minutes at softball games. How much time does Jana spend at softball practice and softball games this month?

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OFF

What is the sum? Decompose one addend to solve.

584 + 135 = _______

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OFF