To determine the mental math expressions that correctly find \(4 \times 59\), let's analyze each option:
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(4 × 60) - (4 x 1)
- This calculates \(4 \times 60 = 240\) and \(4 \times 1 = 4\). Thus, \(240 - 4 = 236\), which is correct since \(4 \times 59 = 236\).
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04× (50 × 9)
- This seems to be incorrectly formatted. Assuming you meant to write \(4 \times (50 + 9)\), then this would calculate as \(4 \times 59 = 236\). However, as it is, it's not valid.
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O 4 + (50 × 9)
- This represents \(4 + (50 \times 9) = 4 + 450 = 454\), which is incorrect.
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(4 × 50) + (4 × 9)
- This expands to \(4 \times 50 = 200\) and \(4 \times 9 = 36\). Thus, \(200 + 36 = 236\), which is correct.
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04 + 50 + 9
- This adds up to \(4 + 50 + 9 = 63\), which is incorrect.
The correct options that use mental math to find \(4 \times 59\) are:
- (4 × 60) - (4 x 1)
- (4 × 50) + (4 × 9)
So, the correct answers are the first and fourth expressions.