列竖式计算.
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( 1)92-46= |
( 2)63-59= |
( 3)73-67= |
( 4)93-78= |
列竖式计算.
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( 1)67-9= |
( 2)93-54= |
( 3)95-78= |
( 4)60-38= |
用你所喜欢的方法算.
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(1)36 +58= |
(2)37 +38= |
(3)27 +47= |
用“十加十、个加个”的方法算.
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例:38+29=□ |
( 1)58+37= |
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30+20=50 |
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8+9=17 |
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50+17=57 |
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( 2)38+46= |
( 3)18+67= |
( 4)28+57= |
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用凑整的方法算.
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例:38 +29= |
(1)57 +23= |
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38 +2=40 |
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40 +27=67 |
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(2)75 +17= |
(3)24 +39= |
(4)49 +32= |
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用先加整十数,再加一位数的方法算.
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例:38+29=□ |
(1)29+15= |
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38+20+9=67 |
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( 2)68+28= |
( 3)27+44= |
( 4)39+25= |
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