2 Answers

Andrei Pozolotin · Answer 1 · 2017-07-10T16:05:56+0000

we know that

$1\ tens=10 \\1\ hundred=100$

so

1) the expression
$17\ tens$ is equal in numbers to

$17\ tens=17*10=170$

2) the expression
$1\ hundred\ 7\ tens$ is equal in numbers to

$1\ hundred\ 7\ tens=1*100+7*10=100+70=170$

therefore

$17\ tens$ and
$1\ hundred\ 7\ tens$ have the same value

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