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题型:单选题 题类:常考题 难易度:普通
20以内的进位加法和退位减法536(10题)
3 + {#blank#}1{#/blank#} = 12 {#blank#}2{#/blank#} + 5=14 5+ {#blank#}3{#/blank#} =12
7+ {#blank#}4{#/blank#} =11 5+ {#blank#}5{#/blank#} =11 6+ {#blank#}6{#/blank#} =13
原有
又飞来
现在有
8只
6只
{#blank#}1{#/blank#}只
9只
5只
{#blank#}2{#/blank#}只
7只
4只
{#blank#}3{#/blank#}只
3-0= 2-2= 3-2= 1+4=
10-3= 4-1= 2+0= 4-2=
1+1= 6+8= 0+1= 15-3= 6+l=
2+9= 6-3= 7-4=
10+2= 9-8= 5+14= 19-6=
7+7{#blank#}1{#/blank#}14 13-10{#blank#}2{#/blank#}13-0 12-6{#blank#}3{#/blank#}12+6
8+9{#blank#}4{#/blank#}8+8 14+4{#blank#}5{#/blank#}4+14 19{#blank#}6{#/blank#}9
10-5{#blank#}7{#/blank#}10+4 6+8{#blank#}8{#/blank#}8-6 20-7{#blank#}9{#/blank#}20-13
4+2{#blank#}1{#/blank#}2 17-10{#blank#}2{#/blank#}8 5+7{#blank#}3{#/blank#}12
10-3{#blank#}4{#/blank#}7 6+9{#blank#}5{#/blank#}16 9-4{#blank#}6{#/blank#}4
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