Aisha changed 1 point 4 5 plus 2 point 3 8 to 1 point 5 plus 2 point 4 in order to estimate the sum. What estimation method did she use?

Aisha changed 1.45 to 1.5 and 2.38 to 2.4. Each number was rounded to the nearest tenth, so she used rounding to the nearest tenth.

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