Question

1) 5,6 : 0,08; 2) 2,6 : 0,65; 3) 30 : 0,016; 4) 1,9798 : 5,21; 5) 0,2278 : 0,067; 6) 5,6· 0,8 − 0,23· 2,4; 7) (72 − 42,5)· 0,08.

Answer 1

Ответ:

1)70

2)4

3)1875

4)0,38

5)3,4

6)3,928

7)2,36

Answer 2

1)70
2)4
3)1875
4)0,38
5)3,4
6)3,928
7)2,36

Answer 3

Let's solve the given mathematical expressions one by one:

1. 5.6 : 0.08 To divide by a decimal, you can multiply by its reciprocal: 5.6 ÷ 0.08 = 5.6 × (1/0.08) = 5.6 × 12.5 = 70

2. 2.6 : 0.65 Again, divide by multiplying by the reciprocal: 2.6 ÷ 0.65 = 2.6 × (1/0.65) = 2.6 × 1.5384615384615385 ≈ 4

3. 30 : 0.016 Divide by multiplying by the reciprocal: 30 ÷ 0.016 = 30 × (1/0.016) = 30 × 62.5 = 1875

4. 1.9798 : 5.21 Divide by multiplying by the reciprocal: 1.9798 ÷ 5.21 ≈ 0.3801152737752162

5. 0.2278 : 0.067 Divide by multiplying by the reciprocal: 0.2278 ÷ 0.067 ≈ 3.3940298507462687

6. 5.6 * 0.8 - 0.23 * 2.4 Multiply and subtract: (5.6 * 0.8) - (0.23 * 2.4) = 4.48 - 0.552 = 3.928

7. (72 - 42.5) * 0.08 First, subtract: (72 - 42.5) = 29.5 Then, multiply by 0.08: 29.5 * 0.08 = 2.36