Question

Study the pattern:
$1\times 8+1=9$
$12\times 8+2=98$
$123\times 8+3=987$
$1234\times 8+4=9876$
$12345\times 8+5=98765$
Write the next four steps. Can you find out how the pattern works ?

Answer 1

$1\times 8+1=9$

$12\times 8+2=98$

$123\times 8+3=987$

$1234\times 8+4=9876$

$12345\times 8+5=98765$

$123456\times 8+6=987654$

$1234567\times 8+7=9876543$

$12345678\times 8+8=98765432$

$123456789\times 8+9=987654321$.