Estimation Math Example 4

Follow the full solution, then compare it with the other examples linked below.

Example 4

easy
Estimate 198×49198 \times 49 without a calculator.

Solution

  1. 1
    Round to friendly numbers: 198≈200198 \approx 200 and 49≈5049 \approx 50.
  2. 2
    Multiply the rounded values: 200×50=10,000200 \times 50 = 10{,}000.

Answer

≈10,000\approx 10{,}000
Estimation works by replacing numbers with nearby values that are easier to compute mentally. The goal is a reasonable check, not an exact result.

About Estimation

Finding a quick approximate answer by rounding to convenient values and computing mentally—no exact calculation needed.

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More Estimation Examples

Example 1 easy

Estimate [formula] without a calculator.

Example 2 medium

Estimate [formula] to the nearest tenth.

Example 3 easy

Estimate [formula] to the nearest whole number.

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