Question: Grade 1+Grade 2+Grade 4+Grade 5 =25.

Level 1+Level 2+Level 3+Level 5 = 19

Level 3+Level 4 =8

(25+ 19-8)÷2= 18

Question 12:

(76+2× 10)÷( 10+2)=8

Answer 2 questions wrong and 8 questions right.

13 questions

Rope length (80+70) ÷ (1/2-1/3) = 900 cm.

900÷3+70 = 370 cm