7. Decimal operations

A group of friends measured each other's heights and recorded the results in the table shown.

How much taller is Sally than Luke?

Name | Height (m) |
---|---|

Luke | $1.49$1.49 |

Yuri | $1.6$1.6 |

Sally | $1.7$1.7 |

Tricia | $1.94$1.94 |

Easy

Approx a minute

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Add and subtract decimals, with and without digital technologies, and use estimation and rounding to check the reasonableness of answers