Sum of first 5: 120 + 150 + 90 + 210 + 180 = <<120+150=270, 270+90=360, 360+210=570, 570+180=750>>750.

Mon, 04 May 2026 15:24:13 +0000

Sum of the First Five Numbers: A Clear Breakdown & Why It Matters Mathematics often begins with simple calculations, but understanding how to sum numbers with clarity opens doors to deeper learning. Today, we explore a straightforward arithmetic example: the sum of the first five numbers in this sequence: 120 + 150 + 90 + 210 + 180. But this isn’t just about adding up digits — it’s about how we break down and interpret such problems for practical applications. ### Step-by-Step Calculation Let’s tackle the equation step by step to ensure precision: 1. First Pair: 120 + 150 = 270 Add the first two numbers to build confidence in composite sums. 2. Add the Third: 270 + 90 = 360 Adding the next number gradually increases accuracy. 3. Fourth: 360 + 210 = 570 Now introducing a larger value — notice how cumulative sums grow steadily. 4. Final Step: 570 + 180 = 750