homework_remembering_te_grade_4-1zwawpi

6-4
Name
Date
Write and solve an equation to solve each problem.
Draw comparison bars when needed.
Show your work.
1. Brigitte fostered 14 dogs this year, which is 5 less than
last year. How many dogs did Brigitte foster last year?
14 = d - 5 or d = 14 + 5; d = 19; 19 dogs
2. Rema has two jobs. In one year, she worked 276 hours
at her first job. In the same year, she worked 3 times the
number of hours at her second job. How many hours did
Rema work that year at her second job?
276 × 3 = h; h = 828; 828 hours
Complete.
3. How many milliliters are equal to 21 L?
4. How many milligrams are equal to 9 g?
5. How many grams are equal to 400 kg?
21,000 mL
9,000 mg
400,000 g
Solve.
6. __ 3 4 - __ 1 4 = 2__
7. __ 2 9 + __ 3 9 = 5__
8. __ 7 8 - __
4
9
1 8 =
6__
8
9. Stretch Your Thinking Harrison says that to convert a mixed
number to a fraction greater than 1, he thinks of it this way:
4 __ 2 5 = __ 5 5 + __ 5 5 + __ 5 5 + __ 5 5 + __ 2 5 = ___ 22
5 . Does his strategy work? Explain.
Yes; The mixed number 4 __ 2 is made up of a whole
5
number part and a fraction part. Harrison changed
the whole number to a sum of fractions with the same
denominator as the fraction part of the mixed number.
Since 1 whole = __ 5 , 4 wholes equal __ 5
5 5 + __ 5 5 + __ 5 5 + __ 5 , which
5
is ___ 20.
When this is added to the fraction __ 2 , the total is ___ 22
5 5
5 .
© Houghton Mifflin Harcourt Publishing Company
136 UNIT 6 LESSON 4 Mixed Numbers and Fractions Greater Than 1