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Pregunta 62

Which calculation does NOT give the product 1.2 × 0.4?

  1. 12 × 4 ÷ 100
  2. 1.2 × 4 ÷ 10
  3. 0.12 × 4
  4. 1.2 × 4Respuesta correcta

Explicación

The product is 0.48 because 12 × 4 = 48 and there are two decimal places in the factors. Calculating 1.2 × 4 without then dividing by 10 gives 4.8, so it treats 0.4 as 4 and is the method that fails.

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Pregunta 62: Which calculation does NOT give the product 1.2 × 0.4? · Decimals and Place Value · Questena