Question

1.Find the sum without actual addition:
a. 1 + 3 + 5
b. 1 + 3 + 5 + 7
c. 1 +3
d. 1 + 3 + 5 + 7 +9​

Answer 1

A...... 9

B....16

C...4

D......25

Answer 2

Answer:

1.9

2.16

3.4

4.25

mark as brainliest.