Завдання:
Обчисли значення виразу, використовуючи розподільну властивість множення:
1) 452 ⋅ 499 + 452 ⋅ 501;
2) 192 ⋅ 2005 – 192 ⋅ 1005;
3) 83 ⋅ 47 + 917 ⋅ 47;
4) 4592 ⋅ 217 – 4592 ⋅ 216.
Розв'язок:
1) 452 ⋅ 499 + 452 ⋅ 501 = 452 ⋅ (499 + 501) = 452 ⋅ 1000 = 452 000
2) 192 ⋅ 2005 – 192 ⋅ 1005 = 192 ⋅ (2005 – 1005) = 192 ⋅ 1000 = 192 000
3) 83 ⋅ 47 + 917 ⋅ 47 = 47 ⋅ (83 + 917) = 47 ⋅ 1000 = 47 000
4) 4592 ⋅ 217 – 4592 ⋅ 216 = 4592 ⋅ (217 – 216) = 4592 ⋅ 1 = 4592