Multiple choice general knowledge math & puzzles 143 + 14.3 286 157 157.3 144.43 Reveal answer Fill a bubble to check yourself C Correct answer Explanation 143 + 14.3 = 157.3. When adding a whole number to a decimal, align by decimal point: 143.0 + 14.3 = 157.3. The tenths place gives 0 + 3 = 3, the units place gives 3 + 4 = 7, and the tens place gives 4 + 1 = 5, with hundreds place remaining 1.