## Subtraction of Numbers Within 10000

#### 1. A fish tank has 3879 fishes. Another fish tank has 2836 fishes. What is the difference between the number of fishes in the two fish tanks?

**Step 1:**Subtract the ones.

9 ones − 6 ones

= 3 ones

**Step 2:**Subtract the tens.

7 tens − 3 tens

= 4 tens

**Step 3:**Subtract the hundreds.

8 hundreds − 8 hundreds

= 0 hundreds

**Step 4:**Subtract the thousands.

3 thousands − 2 thousands

= 1 thousand

So, we get:

The difference between the number of fishes in the two fish tanks is

**1043**.#### 2. Jason has 4147 cards. Jordan has 2237 cards. How many more cards has Jason than Jordan?

**Step 1:**Subtract the ones.

7 ones − 7 ones

= 0 ones

**Step 2:**Subtract the tens.

4 tens − 3 tens

= 1 ten

**Step 3a:**Regroup.

2 hundreds cannot be subtracted from 1 hundred, so we regroup the thousands and the hundreds.

4 thousands 1 hundred

= 3 thousands 11 hundreds

**Step 3b:**Subtract the hundreds.

11 hundreds − 2 hundreds

= 9 hundreds

**Step 4:**Subtract the thousands.

3 thousands − 2 thousands

= 1 thousand

So, we get:

Jason has

**1910**more cards than Jordan.#### 3. Susan and Anna had 3131 clips altogether. Susan had 1465 clips. Find the number of clips that Anna had.

**Step 1a:**Regroup the tens and the ones.

5 ones cannot be subtracted from 1 one, so we regroup the tens and the ones.

3 tens 1 one

= 2 tens 11 ones

**Step 1b:**Now, subtract the ones.

11 ones − 5 ones

= 6 ones

**Step 2a:**Regroup the hundreds and the tens.

6 tens cannot be subtracted from 2 tens, so we regroup the hundreds and the tens.

1 hundred 2 tens

= 0 hundreds 12 tens

**Step 2b:**Now, subtract the tens.

12 tens − 6 tens

= 6 tens

**Step 3a:**Regroup the thousands and the hundreds.

4 hundreds cannot be subtracted from 0 hundreds, so we regroup the thousands and the hundreds.

3 thousands 0 hundreds

= 2 thousands 10 hundreds

**Step 3b:**Now, subtract the hundreds.

10 hundreds − 4 hundreds

= 6 hundreds

**Step 4:**Subtract the thousands.

2 thousands − 1 thousand

= 1 thousand

So, we get:

Anna has

**1666**clips.#### 4. Mrs. Joseph earned $4000. She spent $2876 and saved the rest. How much money did she save?

**Step 1a:**Regroup the thousands and hundreds.

Since the ones, tens and hundreds are all zeroes, we start by regrouping the thousands.

3 tens 1 one

= 2 tens 11 ones

**Step 1b:**Regroup the hundreds and tens.

Since the ones, tens and hundreds are all zeroes, we start by regrouping the thousands.

10 hundreds

= 9 hundreds 10 tens

**Step 1c:**Regroup the tens and ones.

10 tens

= 9 tens 10 ones

**Step 1d:**Now, subtract the ones.

10 ones − 6 ones

= 4 ones

**Step 2:**Next, subtract the tens.

9 tens − 7 tens

= 2 tens

**Step 3:**Then, subtract the hundreds.

9 hundreds − 8 hundreds

= 1 hundred

**Step 4:**Lastly, subtract the thousands.

3 thousands − 2 thousands

= 1 thousand

So, we get:

She saved

**$1124**.#### 5. Mr. Yap had 1354 mangoes. He sold 893 mangoes. How many mangoes had he left?

**1354 − 893 = ?**

He had

**461**mangoes left.