45×5

Answer: 225 Step-by-step explanation (in English, as the chosen subject is English, but still clear math reasoning): 1) Understand the expression - 45 × 5 means 45 multiplied by 5 (the product of the two numbers). 2) Method 1: Distributive property (use that 45 = 40 + 5) - 45 × 5 = (40 + 5) × 5 - Apply distributive property: (40 × 5) + (5 × 5) - Compute: 40 × 5 = 200 and 5 × 5 = 25 - Sum: 200 + 25 = 225 3) Method 2: Mental math (split 45 into 40 and 5) - 5 × 45 = (5 × 40) + (5 × 5) - 5 × 40 = 200, 5 × 5 = 25 - 200 + 25 = 225 4) Method 3: Quick check by halving one factor after doubling to 10 - 45 × 5 = (45 × 10) ÷ 2 = 450 ÷ 2 = 225 5) Final check - All straightforward methods give the same result: 225. Key terms (for English language learners): - Product: the result of multiplication - Factor/Multiplier: the numbers being multiplied - Distributive property: a × (b + c) = (a × b) + (a × c) - Mental math: solving in your head without a calculator - Long multiplication: the standard column method (not needed here since the multiplier is a single digit) If you’d like, I can translate these steps into Russian and point out the English math vocabulary line by line.