Place value positions: From right to left: ones, tens, hundreds.
From right to left: 7 (ones), 8 (tens), 4 (hundreds)
The hundreds digit is the third digit from the right
Circle the digit 4
The hundreds digit in 487 is 4.
Digit value: The actual worth of a digit based on its position (digit × place value).
In 632, the tens digit is 3
Tens value = 3 × 10 = 30
The value of the tens digit in 632 is 30.
Expanded form: Writing a number as the sum of each digit's value.
5 is in the hundreds place: 5 × 100 = 500
4 is in the tens place: 4 × 10 = 40
7 is in the ones place: 7 × 1 = 7
547 = 500 + 40 + 7
547 = 500 + 40 + 7
Number ordering: Compare numbers by examining digits from left to right (highest place value first).
234: 2 hundreds, 324: 3 hundreds, 243: 2 hundreds
So 324 is largest, compare 234 vs 243
234: 3 tens, 243: 4 tens
So 234 < 243
Least to greatest: 234, 243, 324
234, 243, 324
Number composition: Building a number from its place value components.
7 hundreds = 7 × 100 = 700
2 tens = 2 × 10 = 20
9 ones = 9 × 1 = 9
700 + 20 + 9 = 729
The number is 729.
Missing digit problems: Finding unknown digits based on given information.
Number format: 5_8 (hundreds = 5, ones = 8)
Tens digit is given as 3
Replace blank with the tens digit: 538
The number is 538.
Digit value comparison: Compare the actual worth of each digit based on position.
Hundreds digit: 6 × 100 = 600
Tens digit: 6 × 10 = 60
Ones digit: 6 × 1 = 6
600 > 60 > 6
The hundreds digit (6) has the greatest value (600).
Zero in place value: Zero holds the place but contributes 0 to the total value.
4 in hundreds place, 0 in tens place, 7 in ones place
4 × 100 = 400
0 × 10 = 0 (zero still holds the tens place)
7 × 1 = 7
Hundreds value: 400, Tens value: 0, Ones value: 7
Base ten blocks: Visual tools representing units (ones), rods (tens), and flats (hundreds).
2 hundreds: 2 × 100 = 200
4 tens: 4 × 10 = 40
5 ones: 5 × 1 = 5
2 hundred blocks (flats)
4 ten blocks (rods)
5 one blocks (units)
2 hundred blocks, 4 ten blocks, 5 one blocks
Place value subtraction: Subtracting numbers by working with hundreds, tens, and ones separately.
357
- 124
-----
7 - 4 = 3
5 - 2 = 3
3 - 1 = 2
357 - 124 = 233
Number comparison: Compare numbers by examining digits from left to right.
Both have 4 hundreds → Equal so far
456: 5 tens, 465: 6 tens
Since 6 > 5, 465 > 456
465 is greater than 456.
Place value addition: Adding numbers by working with hundreds, tens, and ones separately.
4 + 7 = 11 → Write 1, carry 1 to tens
3 + 5 + 1 (carry) = 9
2 + 1 = 3
234 + 157 = 391
Word problem solving: Translating story problems into mathematical operations.
"Gives" indicates subtraction: 325 - 142
2 < 4, so borrow from hundreds: 325 → 2[12]5
Hundreds: 2 - 1 = 1
Tens: 12 - 4 = 8
Ones: 5 - 2 = 3
Emma has 183 marbles left.
Number patterns: Identifying the rule by finding the difference between consecutive numbers.
200 - 100 = 100
300 - 200 = 100
The pattern is adding 100 each time
300 + 100 = 400
400 + 100 = 500
The next two numbers are 400 and 500.
Missing number problems: Using inverse operations to find unknown values.
456 - ? = 234
This means ? = 456 - 234
456 - 234 = 222
456 - 222 = 234 ✓
The missing number is 222.