The children in Class 4 count the vehicles passing their school. They count the vehicles between 07:30 and 08:30 They also count the vehicles between 11:00 and 12:00 The bar charts show their results.
16
7/8 ; 1/7
5328
360× 10 and 360000÷ 100 = 3600; 3600÷ 10 = 360
Triangle and pentagon are regular polygon; rectangle is irregular polygon
1. obtuse angle, 2. right angle, 3. acute angle
100%, 50% and 1/4
(5,3)
a. 150; b. 75
Everybody sings "Baby shark"
