EnVision Math
Topic 5:
Lesson 5-8
Multiplying by 1-Digit Numbers:
Choosing the Correct Operation to
Solve Word Problems
2010-11
How can I
choose the
correct operation
to solve word
problems?
Choose the Operation
Multiplication
Addition
Division
Subtraction
combining
equal groups
to find the
total
combining
unequal
groups to
find the total
separating
the total into
equal
groups
separating
the total into
unequal
groups
each,
equal,
per
have left,
many
more/less,
difference
each,
equal,
per, times
as many
sum,
in all,
total
Multiplication
Subtraction
Division
Addition
In 1990, a high-school class in Indiana made a
very large yo-yo. It weighed 6 times as much as
a student who weight 136 pounds. What was the
weight of the yo-yo?
? pounds
136 136136 136 136 136
pounds per student
136 x 6 = 816 pounds
In September, Jamie traveled 379 miles from
Andersonville to Foster, 244 miles from Foster to
Leyton, and 137 miles from Leyton back to
Andersonville. How many miles did Jamie travel
in September?
? miles
379 244137
379 + 244 + 137 = 760 miles
Runner A ran 844 miles last year. Runner B ran
1,063 miles. How many more miles did Runner B
run than runner A?
1,063 miles for Runner B
844
? more miles
1,063 - 844= 219 miles