This section deals with the revision of place value.

Remember that we write decimal numbers in the form:

Thousands | Hundreds | Tens | Units | . | Tenths | Hundredths | Thousandths |

Here are some number cards:

1 | 7 | 3 | 5 |

You can use each card *once* to make the number 1735, like this:

1 | 7 | 3 | 5 |

(a) | What is the biggest number you can make with the four cards? |

(b) | Explain why you cannot make an even number with the four cards. |

Note: | It is often helpful to refer to a number line when comparing values; |

a number line can also show negative values: |

Put the correct sign, < or = or >, into each sentence.

(a) | – 7 | – 2 | |

(b) | 3 – 2 | – 5 | |

(c) | 3 – 5 | 4 – 6 |

The arrow on this thermometer shows a temperature of 10 °C.

(a) | Draw an arrow on the thermometer to show a temperature of 24 °C. Label the arrow 24 °C. |
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(b) | Draw an arrow on the thermometer to show a temperature of – 4 °C. Label the arrow – 4 °C. |
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(c) | The temperature was – 10 °C. It went up 15 °C. What is the temperature now? |
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(d) | Write these temperatures in order, coldest first. | |||||

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