Addition of Numbers Within 10000
In this video
1. Binu has 2326 beads. Zara has 1272 beads. Find the sum of the number of beads they have.
Step 1: Add the ones.
6 ones + 2 ones
= 8 ones
Step 2: Add the tens.
2 tens + 7 tens
= 9 tens
Step 3: Add the hundreds.
3 hundreds + 2 hundreds
= 5 hundreds
Step 4: Add the thousands.
2 thousands + 1 thousand
= 3 thousands
6 ones + 2 ones
= 8 ones
Step 2: Add the tens.
2 tens + 7 tens
= 9 tens
Step 3: Add the hundreds.
3 hundreds + 2 hundreds
= 5 hundreds
Step 4: Add the thousands.
2 thousands + 1 thousand
= 3 thousands
The sum of the number of beads they have is 3598.
2. Hamza has 2837 cards. Farhan has 4177 cards. How many cards do they have altogether?
Step 1: Add the ones.
7 ones + 7 ones
= 14 ones
= 1 ten 4 ones
Step 2: Add the tens.
1 ten + 3 tens + 7 tens
= 11 tens
= 1 hundred 1 ten
Step 3: Add the hundreds.
1 hundred + 8 hundreds + 1 hundred
= 10 hundreds
= 1 thousand
Step 4: Add the thousands.
1 thousand + 2 thousands + 4 thousands
= 7 thousands
They have 7014 cards altogether.
Watch out: if you forget to regroup, you get 6904, which is wrong. When a place makes 10 or more, regroup: write the small 1 at the top of the next place on the left.
Watch out: if you forget to regroup, you get 6904, which is wrong. When a place makes 10 or more, regroup: write the small 1 at the top of the next place on the left.
3. A shopping mall received 5962 shoppers on Wednesday and 2311 shoppers on Thursday. How many shoppers did it receive on the two days altogether?
5962 + 2311 = ?
It received 8273 shoppers on the two days altogether.
4. Mr. Garcia earned $1750. Mrs. Yam earned $669. How much did they earn altogether?
$1750 + $669 = ?
Be careful: 669 has only 3 digits. Line up the ones, so the 6 goes under the hundreds, not the thousands.
They earned $2419 altogether.