Question

ак решить 506 номер Выполни умножение 2 1/2×2 4/5 1 3/5×7 1/2 2 2/9 ×2 19/40 4 1/6×1 2/5 1 1/5×2 11/12 7 5/9×1 1/17ак решить 506 номер Выполни умножение 2 1/2×2 4/5 1 3/5×7 1/2 2 2/9 ×2 19/40 4 1/6×1 2/5 1 1/5×2 11/12 7 5/9×1 1/17

Answer 1

Ответ: 2 1/2×2 4/5=5/2×14/5=5×14/2×5=7

1 3/5×7 1/2=12

2 2/9×2 19/40=20/9×99/20=20×99/9×20=1980/360=5 1/2

4 1/6×1 2/5=25/6×7/5=25×7/6×5=175/30=5 5/6

1 1/5×2 11/12=6/5×35×12=6×35/5×12=210/60=3 2/1

7 5/9×1 1/17=68/9×18/17=68×18/9×17=1224/153=8

Answer 2

To solve this problem, we need to perform multiplication of mixed numbers. We can convert each mixed number into an improper fraction, multiply the numerators together, and multiply the denominators together, then simplify the resulting fraction into a mixed number if needed. Here are the solutions for each multiplication:

1. 2 1/2 × 2 4/5 = (5/2) × (14/5) [converting mixed numbers to improper fractions] = 35/2 = 17 1/2 [converting the improper fraction back to a mixed number]

2. 1 3/5 × 7 1/2 = (8/5) × (15/2) = 24 = 24 0/1 [simplifying the fraction]

3. 2 2/9 × 2 19/40 = (20/9) × (99/40) = 495/18 = 27 3/18 = 27 1/6

4. 4 1/6 × 1 2/5 = (25/6) × (7/5) = 175/30 = 5 5/6

5. 1 1/5 × 2 11/12 = (6/5) × (35/12) = 7/2 = 3 1/2

6. 7 5/9 × 1 1/17 = (68/9) × (18/17) = 1224/153 = 8 120/153 = 8 40/51

Therefore, the solutions to the multiplication problems are:

2 1/2 × 2 4/5 = 17 1/2 1 3/5 × 7 1/2 = 24 2 2/9 × 2 19/40 = 27 1/6 4 1/6 × 1 2/5 = 5 5/6 1 1/5 × 2 11/12 = 3 1/2 7 5/9 × 1 1/17 = 8 40/51