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IRINA_888 [86]
1 year ago
7

My calculator does not have a 3 key that works! How can I use this broken calculator to do 23 x 45.

Mathematics
1 answer:
erik [133]1 year ago
3 0
<h3><u>Solution:-</u></h3>

\longrightarrow This problem can be tackled by using distributive property of multiplication .

It states for any three numbers a,b and c

\green{ \underline { \boxed{ \sf{(a±b)\times c = a \times c±b\times c}}}}

<u>Similarly</u>,

\quad23 × 45

\longrightarrow(21+2) ×45

\longrightarrow21×45+2×45

\longrightarrow945 + 90

\longrightarrow 1035

It can also be done as-

\quad23 × 45

\longrightarrow(25-2) ×45

\longrightarrow25×45-2×45

\longrightarrow1125-90

\longrightarrow 1035

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