
两题简便方法计算
1个回答
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( 166 + 1/20 ) ÷ 41
= ( 164 + 2 + 1/20 ) ÷ 41
= ( 164 + 41/20 ) X 1/41
= 4 + 1/20
( 43 + 2/19 ) ÷ 21
= ( 42 + 19/19 + 2/19 ) X 1/21
= ( 42 + 21/19 ) X 1/21
= 2 + 1/19
= ( 164 + 2 + 1/20 ) ÷ 41
= ( 164 + 41/20 ) X 1/41
= 4 + 1/20
( 43 + 2/19 ) ÷ 21
= ( 42 + 19/19 + 2/19 ) X 1/21
= ( 42 + 21/19 ) X 1/21
= 2 + 1/19
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