Ballavianasophia419go Ballavianasophia419go Math Answered ACTIVITY I. Find the sum. 1. 6.8 + 3.4 2. 18.3 + 92.9 3. 189.3 + 274.3 + 392.3 4. 0.77 + 0. 021 5. 008 + 3.15 + 5.2 II. Find the difference. 6. 9.8 - 5.3 7. 15.3 - 2.09 8. 3.923 – 2.743 9. 0.1 – 0.009 10.3.25 – 0.99