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------------------------------------------------ Add, subtract, or multiply the following:

1. [tex]$91.2 + 89.9$[/tex]

2. [tex]$902.3 - 8.8$[/tex]

3. [tex]$5 \times 98.2$[/tex]

4. [tex]$4.4 \times 0.21$[/tex]

5. [tex]$62.99 - 10.83$[/tex]

6. [tex]$423.22 + 98.30$[/tex]

7. [tex]$4.4 \times 6$[/tex]

8. [tex]$7 \times 21.6$[/tex]

9. [tex]$24.52 - 9.6$[/tex]

10. [tex]$369.45 + 32.42$[/tex]

11. [tex]$-12.5 \times 163.2$[/tex]

12. [tex]$16 \times 5^7 \times 2.3$[/tex]

13. [tex]$121.3 + 435.7$[/tex]

14. [tex]$201.7 - 104.6$[/tex]

Answer :

Sure, let's go through each of the calculations step by step:

1. Adding 91.2 and 89.9:
- [tex]\( 91.2 + 89.9 = 181.1 \)[/tex]

2. Subtracting 8.8 from 902.3:
- [tex]\( 902.3 - 8.8 = 893.5 \)[/tex]

3. Multiplying 5 by 98.2:
- [tex]\( 5 \times 98.2 = 491.0 \)[/tex]

4. Multiplying 4.4 by 0.21:
- [tex]\( 4.4 \times 0.21 = 0.924 \)[/tex]

5. Subtracting 10.83 from 62.99:
- [tex]\( 62.99 - 10.83 = 52.16 \)[/tex]

6. Adding 423.22 and 98.30:
- [tex]\( 423.22 + 98.30 = 521.52 \)[/tex]

7. Multiplying 4.4 by 6:
- [tex]\( 4.4 \times 6 = 26.4 \)[/tex]

8. Multiplying 7 by 21.6:
- [tex]\( 7 \times 21.6 = 151.2 \)[/tex]

9. Subtracting 9.6 from 24.52:
- [tex]\( 24.52 - 9.6 = 14.92 \)[/tex]

10. Adding 369.45 and 32.42:
- [tex]\( 369.45 + 32.42 = 401.87 \)[/tex]

11. Multiplying -12.5 by 163.2:
- [tex]\( -12.5 \times 163.2 = -2040.0 \)[/tex]

12. Calculating [tex]\( 16 \times 5^7 \times 2.3 \)[/tex]:
- First, calculate [tex]\( 5^7 = 78125 \)[/tex].
- Then, multiply [tex]\( 78125 \times 2.3 = 179687.5 \)[/tex].
- Finally, multiply [tex]\( 16 \times 179687.5 = 2875000.0 \)[/tex].

13. Adding 121.3 and 435.7:
- [tex]\( 121.3 + 435.7 = 557.0 \)[/tex]

14. Subtracting 104.6 from 201.7:
- [tex]\( 201.7 - 104.6 = 97.1 \)[/tex]

These calculations provide each solution based on the operations required: addition, subtraction, or multiplication.