Fill in the blanks with units (Eg 1 u) or unit equations (Eg 1 u + 2).
Adam and Bryan have 18 marbles.
Adam has 4 less marbles than Bryan.
- Number of marbles that Adam has = _____
- Number of marbles that Bryan has = _____
- Total number of marbles = _____
- 1 u = _____
Choose the person who has less marbles to be 1 u.
Adam has 4 less marbles than Bryan.
So, Adam has less marbles.
(a)
Number of marbles that Adam has = 1 u
(b)
Number of marbles that Bryan has = 1 u + 4
(c)
Total number of marbles
= 1 u + 1 u + 4
= 2 u + 4
(d)
Total number of marbles = 18
2 u + 4 = 18
2 u = 18 - 4 = 14
1 u = 14 ÷ 2 = 7
Answer(s): (a) 1 u; (b) 1 u + 4; (c) 2 u + 4; (d) 7