Adding whole numbers to four digits
"When two piles come together, we add," says Biscuit. "Add the big bundles first — the thousands — then the hundreds, tens and ones. Let's have a go together!"
1. Add using any strategy. Show your thinking.
a) 340 + 250 = b) 1 200 + 650 =
2. Bo's burrow holds 2 350 gumnuts; Pip's hollow holds 1 425. How many altogether?
3. Add these (watch for carrying):
a) 1 675 + 1 248 = b) 3 060 + 2 970 =
4. On Harvest Day the friends gathered 1 850 gumnuts in the morning and 2 340 in the afternoon. What was the day's total?
5. Challenge: Find two four-digit numbers that add to exactly 5 000. Show they work.