Question

estimates the product and verify by actual calculations 603×45​

Answer 1

Answer:

$603 \times 45 = 27,135$

Step-by-step explanation:

$603 \times 45 = (600+3) \times (40+5) \\ \\ (600+3) \times (40+5) = (600 \times 40) + (600 \times 5) + (3 \times 40) + (3 \times 5) \\ \\ (600 \times 40) + (600 \times 5) + (3 \times 40) + (3 \times 5) = 24000 + 3000 + 120 + 15 \\ \\ 24000 + 3000 + 120 + 15 = 27,135$