Answer:
a) 150, b) 360, c) 90, d) -60
Step-by-step explanation:
a) 30 + ___ = 180
180 - 30 = 150
b) 4 * 90 = 360
c) 270 - 180 = 90
d) 90 / ____ = 30
30 / 90 = 1/3
A: 30+150=180
B: 4 times 90=360
C:270-180=90
D: 90 divided by 3 =30
