26 P5.DA.JC.17100325
Level 1
Tom is 72 kg. Alice's mass is 79 of Tom's mass. What is their average mass?
2 m
Average F Multiplication Fraction of a whole Mass
27 P5.ST.JC.18121203
Level 3
The average cost of some books is $30.
When a book that costs $90 is added,
the average cost of the books becomes $40.
How many books are there in the end?
3 m
2 averages Averaging out Average with unknown quantity Number x value Units equations Units table
28 P5.DA.JM.17083164
Level 1
What is the average of the first 5 odd numbers?
2 m
Average Odd & even
29 P5.ST.JC.18121204
Level 3
The average cost of some books is $30.
When a book that costs $90 is removed,
the average cost of the books becomes $10.
How many books are there in the end?
3 m
2 averages Averaging out Average with unknown quantity Number x value Units equations Units table
30 P5.DA.JM.17083185
Level 1
There are 3 boxes. The mass of Box A is 3.4 kg, the mass of Box B is 5.8 kg and the mass of Box C is 4.2 kg. Which box has its mass nearest to the average mass of the 3 boxes? Give the letter only for the answer.
2 m
Average Mass

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