Add numbers in scientific notation practice answers

Answer 1

Certainly! Here are some practice problems for adding numbers in scientific notation, along with their answers:

Practice Problems

1. (3.0 × 10²) + (4.5 × 10²)
   Answer: 7.5 × 10²

2. (6.2 × 10³) + (3.1 × 10²)
   Answer: 6.51 × 10³
   (Note: Convert \(3.1 \times 10^{2}\) to \(0.031 \times 10^{3}\) before adding)

3. (1.2 × 10⁴) + (3.0 × 10⁴)
   Answer: 4.2 × 10⁴

4. (5.1 × 10⁵) + (2.3 × 10⁵)
   Answer: 7.4 × 10⁵

5. (9.7 × 10⁻³) + (2.4 × 10⁻³)
   Answer: 1.21 × 10⁻²
   (Note: \(9.7 \times 10^{-3} + 2.4 \times 10^{-3} = 12.1 \times 10^{-3}\))

6. (8.0 × 10⁶) + (1.1 × 10⁷)
   Answer: 1.91 × 10⁷
   (Note: Convert \(8.0 \times 10^{6}\) to \(0.8 \times 10^{7}\) before adding)

7. (3.5 × 10⁻⁵) + (6.0 × 10⁻⁵)
   Answer: 9.5 × 10⁻⁵

8. (4.2 × 10²) + (3.5 × 10⁵)
   Answer: 3.5042 × 10⁵
   (Note: Convert \(4.2 \times 10^{2}\) to \(0.042 \times 10^{5}\) before adding)

Summary of Answers

1. 7.5 × 10²
2. 6.51 × 10³
3. 4.2 × 10⁴
4. 7.4 × 10⁵
5. 1.21 × 10⁻²
6. 1.91 × 10⁷
7. 9.5 × 10⁻⁵
8. 3.5042 × 10⁵

Feel free to let me know if you need more practice problems or any further explanations!