Find the sum-
Q1.
Q2. 
Q4.
Q5.
Q6.
Q7.
Q8.
Q9.
Q10.
Fill in the missing numbers-Q11.
(a) 3 + ___ = 8
(b) ___ + 5 = 9
(c) 7 – ___ = 2
(d) ___ – 3 = 4
(e) 5 + ___ = 7
Word Problems-Q13. 8 birds were on a tree. 3 flew away. How many are still there?
Q14. There are 5 pencils. 1 pencil is lost. How many pencils remain?
Q15. 7 apples are in a basket. 4 apples are taken out. How many are left?