Digits, Grade 7, Volume 1, Homework Helper

### 1-5: TEKS Practice

• 1. Which of these is the reciprocal of negative , 14 over 5 , question mark

• A. 5 fourteenths

• B. negative , 5 fourteenths

• C. negative , 14 over 5

• D. 14 over 5

• 2. Find the reciprocal of 4 sevenths . Simplify your answer.

• 3. Which multiplication expression is equivalent to the division expression negative , 7 seventeenths , divides , 13 over 34 , question mark

• A. negative , 17 over 7 , times , 13 over 34

• B. negative , 17 over 7 , times , 34 over 13

• C. negative , 7 seventeenths , times , 13 over 34

• D. negative , 7 seventeenths , times , 34 over 13

• 4. Divide 5 sevenths , divides . open , negative , 11 over 5 , close and simplify.

• 5. There are approximately 39.37 inches in 1 meter. How many meters are there in 190 inches?

• 6.

• a. Writing Which of the numbers negative , 7 thirteenths , comma 1 , and 6 sevenths , comma negative 1 , and 6 sevenths , comma and 7 thirteenths is the reciprocal of 1 , and 6 sevenths , question mark

• b. What is the reciprocal of 7 thirteenths , question mark

• c. What do you notice about the reciprocals of 1 , and 6 sevenths and 7 thirteenths , question mark Explain.

• 7.

• a. Reasoning Find the reciprocal of 1 , and 1 seventeenth , .

• b. Find the reciprocal of 17 over 18 , .

• c. Explain how finding the first reciprocal simplifies finding the second reciprocal.

• 8. Find the reciprocal of negative 8 , and 1 fourth , .

• 9. Find the quotient. 7 tenths , divides 4.6

• 10.

• a. Error Analysis Your friend says the quotient 3 fourths , divides , 1 fourth is 1 third , . What is the correct quotient?

• b. What mistake did your friend likely make?

• A. Your friend multiplied with the reciprocal of the first fraction, not the second fraction.

• B. Your friend multiplied 4 thirds , times 4.

• D. Your friend multiplied 3 fourths , times , 1 fourth .

• 11. Think About the Process You want to write a multiplication expression equivalent to negative 2 , and 1 eighth , divides 6 , and 4 fifths , .

• a. What is the first step?

• A. Find the reciprocal of the divisor.

• B. Find the reciprocal of the dividend.

• C. Multiply the numerators of the fractions.

• D. Write the mixed numbers as improper fractions.

• b. Which multiplication expression is equivalent to negative 2 , and 1 eighth , divides 6 , and 4 fifths , question mark

• A. negative , 17 over 8 , times , 34 over 5

• B. negative , 8 seventeenths , times , 5 thirty fourths

• C. negative , 17 over 8 , times , 5 thirty fourths

• D. negative , 8 seventeenths , times , 34 over 5

• 12. The area of a rectangle is 25 square feet. If its width is 3 , and 1 third feet, find its length.

• 13. Open-Ended Which multiplication expression is equivalent to 5 eighths , divides , 1 sixteenth , question mark

• A. 8 fifths , times , 1 sixteenth

• B. 5 eighths , times , 1 sixteenth

• C. 5 eighths , times 16

• D. 8 fifths , times 16

• 14. Perform the indicated operation. 3 , and 1 sixth , divides . open . negative 1 , and 4 ninths . close

• 15. Find the quotient 7 fifteenths , divides , 6.2.

• 16. A patient is to take 4 , and 1 third tablespoons of medicine per day in 4 equally divided doses. How much medicine is to be taken in each dose?

End ofPage 34