Complex addition can be simplified by breaking numbers down. Look at how we can form 38,800 using base components: $25,000 + 13,000 + (400 \times 2)$ $= 38,000 + 800 = 38,800$

Strategy Visualization

Digits and Operations Puzzles

Challenge: Add two 5-digit numbers to get a sum greater than $90,250$ .

Example: $45,126 + 45,126 = 90,252$ .

Challenge: Subtract two 5-digit numbers to get a difference less than $56,503$ .

Example: $60,000 - 10,000 = 50,000$ .

Tip

Tip: When asked to find examples, try using “Round Numbers” (numbers ending in 0) first to make the estimation easier.