21 P5.DA.JM.17083190
Level 3
The average of 12 numbers is 34. If 3 of the numbers are excluded, the average of the remaining numbers is reduced to 29. Find the sum of these 3 numbers.
3 m
Averaging out 2 Averages
22 P5.DA.JM.17083144
Level 3
The average mass of a group of 12 children is 33 kg and the average mass of another group of 18 children is 36 kg. What is the average mass of the two groups of children?
3 m
Averaging out 2 Averages Mass
23 P5.DA.NK.23012605
Level 3
Bryan went on a tour with his wife and two children. An average of $799 was spent on each child while an average of $1081 was spent on each adult. On the whole, what was the average amount spent on each person for the trip?
3 m
Averaging out 2 averages Money
24 P5.DA.JM.17083191
Level 3
A list of 13 numbers has an average of 330. When two numbers are deleted from the list, the average of the remaining numbers is 313.
  1. What is the sum of 13 numbers?
  2. What is the bigger number between the two numbers that have been deleted given that the difference between the two numbers is 1?
3 m
Averaging out 2 Averages More than or less than Units method
25 P5.DA.NK.23052623
TRY FOR FREE
Level 3
The average height of a group of 6 girls is 137 cm. When Kathy and Nicole joined the group, the average height increased by 4 cm. What is Kathy and Nicole's total height?
3 m
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Averaging out 2 Averages Length Number x value Units table

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