Year 2 Numbers to 1000: Read, Represent and Order

Students learn that a number can be represented in several equivalent ways. For example, 684 can be shown with 6 hundreds, 8 tens and 4 ones; written as 684; written in words; or located between nearby benchmark numbers on a number line.

• Read and write two- and three-digit numbers, including numbers containing zero.
• Represent numbers using hundreds, tens and ones, concrete materials, drawings and expanded form.
• Use hundreds charts and number patterns to locate missing numbers.
• Locate and estimate numbers on number lines using labelled benchmarks and intervals.
• Compare and order numbers by considering place value from left to right.
• Recognise easily confused numerals such as 808, 880, 818 and 881.

Represent 352

352 = 3 hundreds + 5 tens + 2 ones = 300 + 50 + 2. The same number can also be written as “three hundred and fifty-two”.

Compare 586 and 568

Both numbers have 5 hundreds. Compare the tens next: 8 tens is greater than 6 tens, so 586 > 568.

Order 807, 780 and 870

All three numbers have different hundreds or tens values. From smallest to largest: 780, 807, 870.

Locate 450 on a number line

If 400 and 500 are labelled, 450 belongs halfway between them. Students should first identify what each interval represents before placing the number.

Content description: recognise, represent and order numbers to at least 1000 using physical and virtual materials, numerals and number lines.

• E1: recognise missing numbers on number lines with different scales and intervals.
• E2: locate pieces within hundreds-chart puzzles using knowledge of natural-number order.
• E3: read, write, say and order two-, three- and four-digit numbers, including numbers with zeros and similar-looking or similar-sounding numerals.
• E4: collect and group large quantities of materials into ones, tens and hundreds, then use them to show different representations of two- and three-digit numbers.

Key idea: Three-digit numbers can be shown with hundreds, tens and ones. Students compare numbers by checking hundreds first, then tens, then ones, and they use number lines to explain where a number belongs.

Remember

• Build three-digit numbers
• Read numerals
• Use hundreds, tens and ones
• Locate on 0–1000 number lines
• Order and compare
• Explain using place value

Quick questions

• Show 486 with hundreds, tens and ones.
• Write 372 in expanded form.
• Which is greater: 808 or 880? Explain using place value.
• Where would 675 sit on a number line from 0 to 1000?
• Order 425, 452, 245 and 542 from smallest to largest.

If an answer is uncertain, return to the model and explain what each part represents before calculating or drawing a conclusion.

• Ignoring zero as a placeholder: in 704, there are 0 tens; the 7 still represents 7 hundreds.
• Comparing the last digit first: compare hundreds, then tens, then ones.
• Reading similar numerals too quickly: ask students to state each digit's place in numbers such as 808, 880, 818 and 881.
• Assuming number-line ticks count by ones: calculate the interval size before locating a number.
• Matching a model by appearance rather than value: have students count the hundreds, tens and ones explicitly.

Use the topic guide for planning, present the static Teacher Slides for explicit instruction, then choose the worksheet, supported Practice or independent Test. Return to concrete place-value models whenever a student can read a numeral but cannot explain the value of its digits.

Students learn that a number can be represented in several equivalent ways. For example, 684 can be shown with 6 hundreds, 8 tens and 4 ones; written as 684; written in words; or located between nearby benchmark numbers on a number line.

• Read and write two- and three-digit numbers, including numbers containing zero.
• Represent numbers using hundreds, tens and ones, concrete materials, drawings and expanded form.
• Use hundreds charts and number patterns to locate missing numbers.
• Locate and estimate numbers on number lines using labelled benchmarks and intervals.
• Compare and order numbers by considering place value from left to right.
• Recognise easily confused numerals such as 808, 880, 818 and 881.

• Australian Curriculum Version 9.0
• Victorian Curriculum F–10
• NSW Curriculum
• England National Curriculum
• New Zealand Curriculum

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