60. Вычислите удобным способом:
2) (25×37 896) × 4;
4) (200-25) × 4;
6) 638 × 87 + 362 × 87.
2) (25×37 896) × 4;
4) (200-25) × 4;
6) 638 × 87 + 362 × 87.
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Ответ:
2) (25×37 896) × 4 = (25×4) × 37896 = 100 × 37896 = 3789600
4) (200-25) × 4 =200×4-25×4 = 800-100=700
6) 638 × 87 + 362 × 87=(638+362)×87 = 1000×87=87000