Estimating Quotients for 4th Grade
To estimate a quotient, round the dividend to a number the divisor divides evenly, then divide. Choosing compatible numbers rather than simply rounding is what makes the estimate useful. The examples below show that choice, with practice problems and answers.
DETAILED EXPLANATION
Estimate a quotient by rounding the dividend to a number that is easy to divide (e.g., 247 ÷ 5 ≈ 250 ÷ 5 = 50).
WORKED EXAMPLES WITH STEP BY STEP SOLUTIONS
Example 1
Estimate 319 ÷ 4.
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Solutions:
Step 1: Apply the concept from the lesson above.
Step 2: Carry out the operation or reasoning.
Answer: 319 ≈ 320. 320 ÷ 4 = 80.
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