\Practical problem solving Write the numbers. How fast can you figure out the answers? Try to write the answers before you hear them

Here are the answers to the problems shown in the image:

1. \( 23 + 47 = 70 \)
2. \( 62 + 12 = 74 \)
3. \( 228 + 54 = 282 \)
4. \( 512 + 33 = 545 \)
5. \( 24 \times 5 = 120 \)
6. \( 70 - 4 = 66 \)
7. \( 28 - 7 = 21 \)
8. \( 52 - 6 = 46 \)
9. \( 8 \times 9 = 72 \)
10. \( 10 \div 2 = 5 \)
11. \( 15 + 25 = 40 \)
12. \( 96 - 16 = 80 \)

Feel free to check or ask about any specific calculations!