Fill in the blanks with units (Eg 1 u) or unit equations (Eg 1 u + 2).
Adam and Bryan have 80 marbles.
Adam has 30 more marbles than Bryan.
- Number of marbles that Adam has = _____
- Number of marbles that Bryan has = _____
- Total number of marbles = _____
- 1u = _____
Choose the person who has less marbles to be 1 u.
Adam has 30 more marbles than Bryan.
So, Bryan has less marbles.
(a)
Number of marbles that Adam has = 1 u + 30
(b)
Number of marbles that Bryan has = 1 u
(c)
Total number of marbles
= 1 u + 30 + 1 u
= 2 u + 30
(d)
Total number of marbles = 80
2 u + 30 = 80
2 u = 80 - 30 = 50
1u = 50 ÷ 2 = 25
Answer(s): (a) 1 u + 30 or 30 + 1 u; (b) 1u; (c) 2 u + 30 or 30 + 2 u; (d) 25