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Year 4 Maths — Knowing our numbers

Compare, order, round and estimate with numbers of four digits and more.

Name: ________________________

Before you start

Move between four thousand and five thousand, a hundred at a time. Watch which end of the line you are nearer.

400045005000

Halfway is 4500. Everything to the left of it is nearer 4000 and everything to the right is nearer 5000 — which is the whole of rounding to the nearest thousand, and why 4783 goes up rather than down.

  1. 1.Make the smallest number you can from the digits 5, 2, 8 and 6, using each digit once.

  2. 2.Make the largest number you can from the digits 4, 7, 1 and 9, using each digit once.

  3. 3.Which of these is the smallest number?

    • a) 30909
    • b) 30099
    • c) 30990
    • d) 39009

  4. 4.What is the predecessor of 40000?

  5. 5.Match each number to what it becomes when it is rounded to the nearest ten.

    • 4623
    • 4627
    • 4638
    • 4611
    • 4646
    • 4610
    • 4650
    • 4620
    • 4640
    • 4630

  6. 6.Sort each number by whether it is closer to 5000 or to 6000.

    Groups: Closer to 5000 · Closer to 6000

    • 5890
    • 5120
    • 5045
    • 5750
    • 5499
    • 5501

  7. 7.Put these numbers in order, smallest first.

    • 9899
    • 98990
    • 9989
    • 98909
    • 98099

  8. 8.Round 4678 to the nearest hundred.

Answer key — Year 4 Maths — Knowing our numbers

  1. 1. 2568
  2. 2. 9741
  3. 3. b) 30099
  4. 4. 39999
  5. 5. 4623 → 4620; 4627 → 4630; 4638 → 4640; 4611 → 4610; 4646 → 4650
  6. 6. 5120 → Closer to 5000; 5890 → Closer to 6000; 5499 → Closer to 5000; 5501 → Closer to 6000; 5045 → Closer to 5000; 5750 → Closer to 6000
  7. 7. 1. 9899 2. 9989 3. 98099 4. 98909 5. 98990
  8. 8. 4700