Choosing appropriate subtraction strategies

Maths

Addition and subtraction

Mrs Crane has used the strategy round and adjust to solve the following equation: 3567 - 2005 = ... which number should she round?

Mrs Crane has used the strategy round and adjust to solve the following equation: 4997 - 1564 = ... which number should she round?

Which is the most efficient strategy to solve the following equation: 5006 - 4992 =

Which is the most efficient strategy to solve the following equation: 7012 - 6991 =

Which is the most efficient strategy to solve the following equation: 4547 - 1345 =

Mrs Crane is using the strategy near doubles to solve the following equation: 3014 + 3007 = ... Which of the following near doubles should she use to help her calculate the answer?

Mrs Crane is using the strategy near doubles to solve the following equation: 4136 + 4122 = ... Which of the following near doubles should she use to help her calculate the answer?

Mrs Crane is using the strategy round and adjust to solve the following: 4543 + 3003 = ... Which of the numbers in the equation should she use to round and adjust?

Mrs Crane is using the strategy round and adjust to solve the following: 3783 + 2998 = ... Which of the numbers in the equation should she use to round and adjust?

Using the strategy round and adjust, add the following three numbers together: 4001 + 3997 + 2005 =

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