Place Value Power: Thousands, Rounding and Roman Numerals
Year 4 • Ages 8–9 • Beginner
Instructions: Work through the activities in order. Use the examples and place-value facts to help you, and write each answer in its box. Check that your counting sequences and rounded numbers follow the stated rule.
Count in Steps
Continue each sequence by using the step shown. For example, counting on in 6s from 12 gives 18, 24, 30. Write one number in each box.
1. Count on in 6s: 18, 24, ,
2. Count on in 7s: 21, 28, ,
3. Count on in 9s: 36, 45, ,
4. Count on in 25s: 100, 125, ,
5. Count on in 1,000s: 2,000, 3,000, ,
One Thousand More or Less
Adding or subtracting 1,000 changes the thousands digit by one. For example, 3,482 + 1,000 = 4,482. Work out each change and write the result.
1. 2,315 is 1,000 more than
2. 4,706 + 1,000 =
3. 6,290 is 1,000 less than
4. 8,045 − 1,000 =
Place Value and Counting Below Zero
In a four-digit number, the digits show thousands, hundreds, tens and ones. For example, in 3,482 the 3 is worth 3,000. For the final question, count backwards one number at a time, passing through zero.
1. In 5,274, what is the value of the digit 5?
2. In 8,361, what is the value of the digit 6?
3. Write 4,000 + 700 + 20 + 9 as a four-digit number.
4. Count backwards: 3, 2, 1, 0, , ,
Round It
To round to the nearest 10, look at the ones digit. To round to the nearest 100, look at the tens digit; to the nearest 1,000, look at the hundreds digit. If that digit is 5 or more, round up; otherwise, round down.
1. Round 347 to the nearest 10.
2. Round 682 to the nearest 100.
3. Round 2,438 to the nearest 1,000.
4. Round 5,761 to the nearest 100.
Read Roman Numerals
Use these reminders: I = 1, V = 5, X = 10, L = 50 and C = 100. When a smaller numeral comes before a larger one, subtract it (for example, IV = 4); otherwise, add the values.
1. Write XIV as a number.
2. Write XXIX as a number.
3. Write XL as a number.
4. Write 75 in Roman numerals.
5. Write 100 in Roman numerals.
Activity 1: 1. 30, 36 ; 2. 35, 42 ; 3. 54, 63 ; 4. 150, 175 ; 5. 4,000, 5,000
Activity 2: 1. 1,315 ; 2. 5,706 ; 3. 7,290 ; 4. 7,045
Activity 3: 1. 5,000 ; 2. 60 ; 3. 4,729 ; 4. −1, −2, −3
Activity 4: 1. 350 ; 2. 700 ; 3. 2,000 ; 4. 5,800
Activity 5: 1. 14 ; 2. 29 ; 3. 40 ; 4. LXXV ; 5. C
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