Question

Estimate: 42 × 58 ≈ _______. (Hint: “≈” means “approximately”

Answer 1

The estimate for 42 × 58, after rounding the numbers to the nearest tens, is 2400. This was calculated by rounding 42 down to 40 and 58 up to 60, and then multiplying the rounded numbers.

Step-by-step explanation:

To estimate the product of 42 × 58, we can round these numbers to their nearest tens and then multiply. Rounding 42 to 40 (because it is closer to 40 than to 50) and 58 to 60 (because it is closer to 60 than to 50), we get:

• 40 (rounded from 42)
• 60 (rounded from 58)

Now, we multiply the rounded numbers:

40 × 60 = 2400

The approximate result of 42 × 58 is thus 2400 (rounded to nearest hundred).