Fill in the blanks with units (Eg 1 u) or unit equations (Eg 1 u + 2).
Bryan and Adam have 10 marbles.
Bryan has 2 less marbles than Adam.
- Number of marbles that Bryan has = _____
- Number of marbles that Adam has = _____
- Total number of marbles = _____
- 1 u = _____
Choose the person who has less marbles to be 1 u.
Bryan has 2 less marbles than Adam.
So, Bryan has less marbles.
(a)
Number of marbles that Bryan has = 1 u
(b)
Number of marbles that Adam has = 1 u + 2
(c)
Total number of marbles
= 1 u + 1 u + 2
= 2 u + 2
(d)
Total number of marbles = 10
2 u + 2 = 10
2 u = 10 - 2 = 8
1 u = 8 ÷ 2 = 4
Answer(s): (a) 1 u; (b) 1 u + 2; (c) 2 u + 2; (d) 4