#### Question 1

Complete these additions and subtractions mentally.

a | |||
---|---|---|---|

b | |||

c | |||

d | |||

e | |||

f | |||

g | |||

h | |||

i | |||

j | |||

k |

#### Question 2

Rearrange these additions to make the mental calculation easier.

a | |||
---|---|---|---|

b | |||

c |

#### Question 3

Use the make up to ten strategy to calculate these.

a | |||
---|---|---|---|

b | |||

c |

#### Question 4

Add from the left to mentally calculate these additions.

a | |||
---|---|---|---|

b | |||

c |

#### Question 5

Use the compensation method (add more than you need to one number, and then subtract the extra bit) to calculate these additions.

a | |||
---|---|---|---|

b | |||

c |

#### Question 6

Subtract a bit at a time to calculate these mentally.

a | |||
---|---|---|---|

b | |||

c |

#### Question 7

Build up to the larger number and keep track of what is added to calculate the difference.

a | |||
---|---|---|---|

b | |||

c |

#### Question 8

Add the same to both numbers to calculate these subtractions.

a | |||
---|---|---|---|

b | |||

c |