Convert 102345 to base 10.

102345 = 1 × 54 + 0 × 53 + 2 × 52 + 3 × 51+ 4 × 50= 625 + 0 + 50+15+4 = 69410Thus, 102345 = 69410

Q7 of 124 Page 42

Convert 10234₅ to base 10.

10234₅ = 1 × 5⁴ + 0 × 5³ + 2 × 5² + 3 × 5¹+ 4 × 5⁰

= 625 + 0 + 50+15+4 = 694₁₀

Thus, 10234₅ = 694₁₀

Convert 987₁₀ to base 5.

Convert 1238₁₀ to base 5.

Convert 211423₅ to base 10.

Convert 98567₁₀ to base 8.

Questions · 124

2. Scientific notations of real numbers and logarithms

1 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 1 2 2 2 2 2 2 3 3 3 3 3 3 4 4 4 4 4 4 5 5 5 5 5 5 6 6 6 6 6 6 7 7 7 7 7 7 7 7 8 9 9 9 9 9 9 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 4 4 4 4 4 4 5 6 6 6 6 6 6 6 6 6 6 6 6 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10