Apply knowledge of unit conversions in order to solve multi-step problems
involving mass in the metric system using visual models and equations
Name:
B
Practice Set
Date:
1) The tomatoes Bertolo bought weighed 3 kilograms 420 grams. His onions weighed
1,050 grams less than the tomatoes. How much did the tomatoes and onions weigh
together? Justify your answer with equations and a visual model.
2) Mónica’s backpack weighs 3,140 grams. Mónica weighs 22 kilograms 610 grams
more than her backpack. If Mónica were to stand on a scale wearing her backpack,
what would the weight read? Justify your answer with equations and a visual model.
3) On Thursday, a pizzeria used 3 kilograms 320 grams less flour than they used on
Friday. On Friday, they used 11 kilograms 150 grams. On Saturday, they used 1,888
grams more than on Friday. What was the total amount of flour used over the three
days? Justify your answer with equations and a visual model.
Apply knowledge of unit conversions in order to solve multi-step problems
involving mass in the metric system using visual models and equations
ANSWER KEY
B
Practice Set
1) The tomatoes Bertolo bought weighed 3 kilograms 420 grams. His onions weighed
1,050 grams less than the tomatoes. How much did the tomatoes and onions weigh
together? Justify your answer with equations and a
visual model.
weight of tomatoes = 3,420 grams
weight of onions = O
3,420 g - 1,050 g = O
2,370 g = O
Total weight = W
3,420 g + 2,370 = W
5,790 g = W
2) Mónica’s backpack weighs 3,140 grams. Mónica weighs 22 kilograms 610 grams
more than her backpack. If Mónica were to stand on a scale wearing her backpack,
what would the weight read? Justify your answer with equations and a visual model.
Mónica’s weight = M
3,140 g + 22,610 g = M
25,750 g = M
Total weight = W
3,140 g + 25,750 g = W
28,890 g = W
3) On Thursday, a pizzeria used 3 kilograms 320 grams less flour than they used on
Friday. On Friday, they used 11 kilograms 150 grams. On Saturday, they used 1,888
grams more than on Friday. What was the total amount of flour used over the three
days? Justify your answer with equations and a visual model.
Flour used on Friday = 11,150 g
Flour used on Thursday = T
11,150 g - 3,320 = T
7,830 g = T
Flour used on Saturday = S
11,150 g + 1,888 g = S
13,038 = S
Total flour used = F
11,150 g + 7,830 g + 13,038 g = F
32,018 g = F