Fill in the blanks with units (Eg 1 u) or unit equations (Eg 1 u + 2).
Adam and Bryan have 90 beads.
Adam has 70 less beads than Bryan.
- Number of beads that Adam has = _____
- Number of beads that Bryan has = _____
- Total number of beads = _____
- 1 u = _____
Choose the person who has less beads to be 1 u.
Adam has 70 less beads than Bryan.
So, Adam has less beads.
(a)
Number of beads that Adam has = 1 u
(b)
Number of beads that Bryan has = 1 u + 70
(c)
Total number of beads
= 1 u + 1 u + 70
= 2 u + 70
(d)
Total number of beads = 90
2 u + 70 = 90
2 u = 90 - 70 = 20
1 u = 20 ÷ 2 = 10
Answer(s): (a) 1 u; (b) 1 u + 70; (c) 2 u + 70; (d) 10