Question

СРОЧНО ПОМОГИТЕ ДАЮ 50 БАЛЛОВ!!!!!

Answer 1

$8.9 \times 7.3 = 64.97$

а)

$89 \times 7.3 = 10 \times 8.9 \times7.3 = 10 \times 64.97 = \\ 649.7$

б)

$8.9 \times 73 = 8.9 \times 7.3 \times 10 = 64.97 \times 10 = \\ 649.7$

в) и г)

$8.9 \times 0.73 = 8.9 \times 7.3 \times 0.1= \\ 64.97 \times 0.1 = 6.497$

д)

$8.9 \times 0.0073 = 8.9 \times 7.3 \times 0.001 = \\ 64.97 \times 0.001 = 0.06497$

е)

$89 \times 0.73 = 10 \times 8.9 \times 7.3 \times 0.1 = \\ 64.97$

ё)

$0.89 \times 0.73 = 0.1 \times 8.9 \times 7.3 \times 0.1 = \\ 64.9 7\times 0.01 = 0.6497$

ж)

$890 \times 7.3 = 100 \times 8.9 \times 7.3 = \\ 100 \times 64.97 = 6497$