Level 3
1 triangle + 1 star = 10
1 star = 2
1 triangle = _____
2 m
Level 3
A = 2 rectangles
B = A + A
B = _____ rectangles
2 m
Level 3
A = 4 rectangles
B + 2 rectangles = A + A
B = _____ rectangles
3 m
Level 3
A = 4 rectangles
B + 2 rectangles = A + A + 3 rectangles
B = _____ rectangles
4 m
Level 2 PSLE
A box contained black balls and green balls. 40% of the balls were green. After some red balls were added to the box, 28% of the balls were green. What percentage of the balls in the box were red?
2 m