PSLE For a recycling project, Fred collected 13 metal cans, Ben collected 2
c metal cans and Ian collected 4 +
c metal cans.
- How many more metal cans did Ben collect than Ian?
- How many metal cans did the 3 boys collect altogether?
(a)
Number of metal cans that Ben collected more than Ian
= 2
c - (4 +
c)
= 2
c -
c - 4
=
c - 4
(b)
Total number of metal cans that the 3 boys collected
= 13 + 2
c + 4 +
c = 13 + 4 + 2
c +
c = 17 + 3
c Answer(s): (a)
c - 4; (b) 17 + 3
c