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?

finding the difference of numbers using the model method
Step 1: Subtract the ones.
subtraction step-by-step
step-by-step subtraction
9 ones − 6 ones
= 3 ones
Step 2: Subtract the tens.
subtraction step-by-step
step-by-step subtraction
7 tens − 3 tens
= 4 tens
Step 3: Subtract the hundreds.
subtraction step-by-step
step-by-step subtraction
8 hundreds − 8 hundreds
= 0 hundreds
Step 4: Subtract the thousands.
subtraction step-by-step
step-by-step subtraction
3 thousands − 2 thousands
= 1 thousand
So, we get:
subtraction step-by-step
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?

finding the difference of numbers using the model method
Step 1: Subtract the ones.
subtraction step-by-step
step-by-step subtraction
7 ones − 7 ones
= 0 ones
Step 2: Subtract the tens.
subtraction step-by-step
step-by-step subtraction
4 tens − 3 tens
= 1 ten
Step 3a: Regroup.
subtraction step-by-step
2 hundreds cannot be subtracted from 1 hundred, so we regroup the thousands and the hundreds.
subtraction step-by-step
step-by-step subtraction
4 thousands 1 hundred
= 3 thousands 11 hundreds
Step 3b: Subtract the hundreds.
subtraction step-by-step
step-by-step subtraction
11 hundreds − 2 hundreds
= 9 hundreds
Step 4: Subtract the thousands.
subtraction step-by-step
step-by-step subtraction
3 thousands − 2 thousands
= 1 thousand
So, we get:
subtraction step-by-step
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.

finding the difference of numbers using the model method
Step 1a: Regroup the tens and the ones.
subtracting numbers
step-by-step subtraction
5 ones cannot be subtracted from 1 one, so we regroup the tens and the ones.
subtracting numbers
step-by-step subtraction
3 tens 1 one
= 2 tens 11 ones
Step 1b: Now, subtract the ones.
subtracting numbers
step-by-step subtraction
11 ones − 5 ones
= 6 ones
Step 2a: Regroup the hundreds and the tens.
subtracting numbers
step-by-step subtraction
6 tens cannot be subtracted from 2 tens, so we regroup the hundreds and the tens.
subtracting numbers
step-by-step subtraction
1 hundred 2 tens
= 0 hundreds 12 tens
Step 2b: Now, subtract the tens.
subtracting numbers
step-by-step subtraction
12 tens − 6 tens
= 6 tens
Step 3a: Regroup the thousands and the hundreds.
subtracting numbers
step-by-step subtraction
4 hundreds cannot be subtracted from 0 hundreds, so we regroup the thousands and the hundreds.
subtracting numbers
step-by-step subtraction
3 thousands 0 hundreds
= 2 thousands 10 hundreds
Step 3b: Now, subtract the hundreds.
subtracting numbers
step-by-step subtraction
10 hundreds − 4 hundreds
= 6 hundreds
Step 4: Subtract the thousands.
subtracting numbers
step-by-step subtraction
2 thousands − 1 thousand
= 1 thousand
So, we get:
subtracting numbers
Anna has 1666 clips.

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

finding the difference of numbers using the model method
Step 1a: Regroup the thousands and hundreds.
subtracting numbers
Since the ones, tens and hundreds are all zeroes, we start by regrouping the thousands.
step-by-step subtraction
3 tens 1 one
= 2 tens 11 ones
Step 1b: Regroup the hundreds and tens.
subtracting numbers
Since the ones, tens and hundreds are all zeroes, we start by regrouping the thousands.
step-by-step subtraction
10 hundreds
= 9 hundreds 10 tens
Step 1c: Regroup the tens and ones.
subtracting numbers
step-by-step subtraction
10 tens
= 9 tens 10 ones
Step 1d: Now, subtract the ones.
subtracting numbers
step-by-step subtraction
10 ones − 6 ones
= 4 ones
Step 2: Next, subtract the tens.
subtracting numbers
step-by-step subtraction
9 tens − 7 tens
= 2 tens
Step 3: Then, subtract the hundreds.
subtracting numbers
step-by-step subtraction
9 hundreds − 8 hundreds
= 1 hundred
Step 4: Lastly, subtract the thousands.
subtracting numbers
step-by-step subtraction
3 thousands − 2 thousands
= 1 thousand
So, we get:
subtracting numbers
She saved $1124.

5. Mr. Yap had 1354 mangoes. He sold 893 mangoes. How many mangoes had he left?

Grade 3, subtraction
1354  −  893  =  ?
finding the difference of numbers using the model method
He had 461 mangoes left.