Stage 4 Cambridge Math Worksheet: Multiply by 100 and 1000

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Instructions

To multiply a whole number by 100, we add two zeros to the end of the number. This is because every digit moves two places to the left in the place value chart.

  • Example: 34 x 100 = 3400

To multiply a whole number by 1000, we add three zeros to the end of the number. This is because every digit moves three places to the left in the place value chart.

  • Example: 34 x 1000 = 34000

Part 1: Multiply by 100

Complete the following equations.

1.   8 x 100 = __________ 2.   92 x 100 = __________
3.   45 x 100 = __________ 4.   310 x 100 = __________
5.   167 x 100 = __________ 6.   804 x 100 = __________

Part 2: Multiply by 1000

Complete the following equations.

1.   6 x 1000 = __________ 2.   51 x 1000 = __________
3.   70 x 1000 = __________ 4.   444 x 1000 = __________
5.   982 x 1000 = __________ 6.   200 x 1000 = __________

Part 3: Mixed Practice

Decide whether to multiply by 100 or 1000 to find the answer.

1.   19 x 1000 = __________ 2.   19 x 100 = __________
3.   280 x 100 = __________ 4.   37 x 1000 = __________
5.   551 x 100 = __________ 6.   86 x 1000 = __________

Part 4: Find the Missing Multiplier

Fill in the blank with either 100 or 1000.

1.   23 x __________ = 23,000 2.   78 x __________ = 7,800
3.   405 x __________ = 40,500 4.   9 x __________ = 9,000
5.   540 x __________ = 540,000 6.   111 x __________ = 11,100

Part 5: Word Problems

Read the questions carefully and write your answer on the line.

  1. A box contains 100 pencils. How many pencils are in 62 boxes?
    ____________________
  2. A charity raises £45 each day. How much money would it raise in 1000 days?
    ____________________


Answer Key

Part 1: Multiply by 100

  1. 800
  2. 9,200
  3. 4,500
  4. 31,000
  5. 16,700
  6. 80,400

Part 2: Multiply by 1000

  1. 6,000
  2. 51,000
  3. 70,000
  4. 444,000
  5. 982,000
  6. 200,000

Part 3: Mixed Practice

  1. 19,000
  2. 1,900
  3. 28,000
  4. 37,000
  5. 55,100
  6. 86,000

Part 4: Find the Missing Multiplier

  1. 1000
  2. 100
  3. 100
  4. 1000
  5. 1000
  6. 100

Part 5: Word Problems

  1. 62 x 100 = 6,200 pencils
  2. £45 x 1000 = £45,000
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