 Counting and understanding number
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Can I order two-digit and three-digit numbers and position these on a number line?

### Example review questions

• Where should these numbers be placed on this number line? 350, 699, 425, 862. Explain how you decided. • Can you mark on this number line the number that is 20 more than 56? • Can you put numbers in each box so that all the numbers are in order? ### Teaching guidance

This teaching guidance document suggests some of the key vocabulary, models, images and practical equipment that children should experience and be able to use. It also includes some teaching tips to provide a few starting points for ways of supporting children with this area of mathematics. Can I order two-digit and three-digit numbers and position these on a number line? - teaching guidance | 118KB ### Consolidation and practice

These resources are to support children in guided or independent work. Roll over the highlighted resources for a description.

#### Ordering numbers This interactive teaching program (ITP) is an ICT-based tool that contains an animation to support the teaching of ordering numbers. Ordering numbers ITP can also be used to help children develop estimation skills and strategies for checking calculations.

#### Decimal number line This interactive teaching program (ITP) is an ICT-based tool to support the exploration of place value within whole and decimal numbers. Decimal number line ITP allows the child or teacher to select an interval from a given number line and show that interval divided into ten equal parts but on a bigger scale, which can then be repeated.

#### Measuring cylinder This interactive teaching program (ITP) is an ICT-based tool to support the exploration of number, measures and problem solving. Measuring cylinder ITP allows the child or teacher to simulate varying intervals on a scale, pouring liquid into the cylinder and interpreting the scale. The ITP can be used to explore and consolidate the interpretation and reading of scales, mental calculation strategies and methods of recording.

### Opportunities to use and apply

Possible contexts include:

• rounding numbers: Place 368 on this number line. What is 368, rounded to the nearest 100? Explain how you know. • calculation, e.g. Find the difference between 37 and 55. • reading scales, e.g. Show where 115 grams would be marked on this scale. ### Confirming learning  