题目内容
写出差是9的减法算式,你能写出多少道?
( )-( )=9 ( )-( )=9 ( )-( )=9
( )-( )=9 ( )-( )=9 ( )-( )=9
( )-( )=9 ( )-( )=9 ( )-( )=9
( )-( )=9 ( )-( )=9 ( )-( )=9
8________________________
7________________________
6________________________
答案:
解析:
解析:
|
( 9 )-( 0 )=9 ( 13 )-( 4 )=9 ( 17 )-( 8 )=9 ( 10 )-( 1 )=9 ( 14 )-( 5 )=9 ( 18 )-( 9 )=9 ( 11 )-( 2 )=9 ( 15 )-( 6 )=9 ( 19 )-( 10 )=9 ( 12 )-( 3 )=9 ( 16 )-( 7 )=9 ( 20 )-( 11 )=9 10-2=8 9-1=8 12-4=8 13-6=7 11-4=7 25-18=7 12-6=6 10-4=6 7-1=6 |
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