10.看图写算式。
$□ + □ = □$
$□ + □ = □$
$□ - □ = □$
$□ - □ = □$
$□ + □ = □$
$□ + □ = □$
$□ - □ = □$
$□ - □ = □$
答案
$3+4=7$
$4+3=7$
$7-3=4$
$7-4=3$
$4+3=7$
$7-3=4$
$7-4=3$
1. 看图写算式。

$7 + 2 = □$
$2 + □ = □$
$9 - 2 = □$
$9 - □ = □$
$7 + 2 = □$
$2 + □ = □$
$9 - 2 = □$
$9 - □ = □$
答案
$7 + 2 = \boxed{9}$
$2 + \boxed{7} = \boxed{9}$
$9 - 2 = \boxed{7}$
$9 - \boxed{7} = \boxed{2}$
$2 + \boxed{7} = \boxed{9}$
$9 - 2 = \boxed{7}$
$9 - \boxed{7} = \boxed{2}$
2. 我会算。
$8+1=$
$4+5=$
$9-6=$
$2+6=$
$9-3=$
$8-2=$
$6+3=$
$3+5=$
$4+4=$
$2+7=$
$9-7=$
$8-6=$
$8+1=$
$4+5=$
$9-6=$
$2+6=$
$9-3=$
$8-2=$
$6+3=$
$3+5=$
$4+4=$
$2+7=$
$9-7=$
$8-6=$
答案
$8+1=9$
$4+5=9$
$9-6=3$
$2+6=8$
$9-3=6$
$8-2=6$
$6+3=9$
$3+5=8$
$4+4=8$
$2+7=9$
$9-7=2$
$8-6=2$
$4+5=9$
$9-6=3$
$2+6=8$
$9-3=6$
$8-2=6$
$6+3=9$
$3+5=8$
$4+4=8$
$2+7=9$
$9-7=2$
$8-6=2$
3.填一填。
$5 + ( ) = 9$
$1 + ( ) = 8$
$6 + 2 = ( )$
$2 + ( ) = 9$
$( ) - 1 = 8$
$8 - ( ) = 6$
$9 - ( ) = 4$
$( ) - 4 = 4$
$9 - ( ) = 7$
$5 + ( ) = 9$
$1 + ( ) = 8$
$6 + 2 = ( )$
$2 + ( ) = 9$
$( ) - 1 = 8$
$8 - ( ) = 6$
$9 - ( ) = 4$
$( ) - 4 = 4$
$9 - ( ) = 7$
答案
$5 + (4) = 9$
$1 + (7) = 8$
$6 + 2 = (8)$
$2 + (7) = 9$
$(9) - 1 = 8$
$8 - (2) = 6$
$9 - (5) = 4$
$(8) - 4 = 4$
$9 - (2) = 7$
$1 + (7) = 8$
$6 + 2 = (8)$
$2 + (7) = 9$
$(9) - 1 = 8$
$8 - (2) = 6$
$9 - (5) = 4$
$(8) - 4 = 4$
$9 - (2) = 7$
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