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Answer:1 hundredths

Step-by-step explanation:One-tenth equals 0.1 and one-hundredth equals 0.01, which means that hundredth equals 10 hundredths. The conversion is the same no matter which unit you are using. You might need to convert from tenths to hundredths if you have one measure in tenths and another in hundredths and want to compare the two.

From the equation above;

1 hundredth + 3 tenths = 31 hundredths

According to the question;

  • We are required to evaluate; 1 hundredth + 3 tenths = how many hundredths.

By place value;

  • 1 hundredth = 1 × 0.01 = 0.01

  • 3 tenths = 3 × 0.1 = 0.3

The addition of both yields;

  • 0.01 + 0.3 = 0.31

  • In essence; since 0.01 = 1 hundredth

  • Then 0.31 = (0.31 ×1)/0.01

  • = 31 hundredths.

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