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Which expression will give a better estimate of 19.2÷419.2 \div 4?\newlineChoices:\newline(A) 16÷416 \div 4\newline(B) 20÷420 \div 4\newlineUse the expression you picked to estimate the quotient.\newline19.2÷419.2 \div 4 is about \newline\underline{\hspace{2cm}}.

Full solution

Q. Which expression will give a better estimate of 19.2÷419.2 \div 4?\newlineChoices:\newline(A) 16÷416 \div 4\newline(B) 20÷420 \div 4\newlineUse the expression you picked to estimate the quotient.\newline19.2÷419.2 \div 4 is about \newline\underline{\hspace{2cm}}.
  1. Compare to choices: Compare 19.219.2 to the nearest whole numbers in the choices, 1616 and 2020. 19.219.2 is closer to 2020 than 1616.
  2. Choose better estimate: Choose (B) 20÷420 \div 4 for a better estimate because it's closer to 19.219.2.
  3. Calculate division: Calculate 20÷420 \div 4. 2020 divided by 44 equals 55.