Number (add/sub)

Hong Kong

Stage 1

Lesson

Remember how you learned a variety of ways to add and subtract 3 digit numbers? You can use these same methods to add and subtract 4 digit (and even larger) numbers, too. Watch the videos below to see what this looks like.

Remember!

- You can add in any order.
- Be sure to add numbers of the same place value.
- If a place value has a sum larger than 9, regroup and carry over to the next place value (Go to the lesson on regrouping to see more).

Remember!

- In subtraction, order matters. Subtract the second number from the first.
- Subtract numbers of the same place value.
- If you see a smaller number being subtracted from a larger one, regroup and borrow from a larger place value. (Go to the lesson on regrouping to see more).

Find the value of $2652+5116$2652+5116.

Find the value of $5599-1187$5599−1187.

Ivan is saving up for a new grand piano, which will cost $\$6898$$6898.

If he currently has $\$2575$$2575 saved up, how much more money does Ivan need to purchase the grand piano?