Basic calculator use and checking reasonableness

3 quick checks≈1% of the testFoundational

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By the end you’ll be able to

decide when a calculator is useful and when a mental or written method is faster or safer
enter calculations accurately using the basic calculator for operations, decimals and multistep expressions allowed by the item
interpret calculator displays correctly, including place value and decimal position

0% read

avoid common calculator errors such as incorrect operation order, missing brackets where relevant to interface, or mistyped digits

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