Calculation Shortcuts( Week 22 Evaluation)
1. Find the result of 29 + 29 + 29 = ? 2. Find the result of 8 + 58 = ? 3. Find the result of 37 − 18 − 2 = ? 4. Find the result of 52 − 26 − 12 = ? 6. Find the result of 56 − 17 + 4 − 3 = ? 7. Find the sum of 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 = ? 8. Find the sum of 10 + 11 + 12 + 13 + 14 + 15 + 16 = ? 9. Find the sum of 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 = ?