1. Fill in the blank: 13 + 4 = ___ + 6

2. Fill in the blank: 22 + ___ = 6 × 5

3. Fill in the blank: 8 × ___ = 64 ÷ 2

4. Fill in the blank: 34 – ___ = 25

5. Arrange the following expressions in ascending order of their values: 67 – 19, 67 – 20, 35 + 25, 5 × 11, 120 ÷ 3

6. Which is greater: 1023 + 125 or 1022 + 128?

7. Which is greater: 113 – 25 or 112 – 24?

8. Which mathematical expression represents the total number of marbles brought by Mallesh and Arun to the playground?

9. What is the importance of using a comma in the sentence: "Shalini sat next to a friend, with toys"?

10. In the sentence "Shalini sat next to a friend with toys", who has the toys according to the first interpretation?