Look at each number line.
Figure (to be drawn): Part a: a number line from 0 to 100 with tick marks every ten, an arrow pointing to an unlabelled point at 68. Part b: a number line from 0 to 20 with tick marks every two, an arrow pointing to an unlabelled point at 10.
(a)A number line from 0 to 100 marked in tens. An arrow points to a mark between 60 and 70, closer to 70. What number is the arrow pointing to?(1)
(b)A number line from 0 to 20 marked in twos. An arrow points exactly halfway between 8 and 12. What number is the arrow pointing to?(1)