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题型:填空题 题类:常考题 难易度:普通
20以内的进位加法和退位减法484(10题)
9+5= {#blank#}1{#/blank#}
4+6={#blank#}2{#/blank#}
27+7={#blank#}1{#/blank#}
{#blank#}1{#/blank#}+ 5 = 13 6 +{#blank#}2{#/blank#}= 14 {#blank#}3{#/blank#}+8 = 16
8 +{#blank#}4{#/blank#}=17 {#blank#}5{#/blank#}+ 8 =15 4 +{#blank#}6{#/blank#}=12
9+4= 10+5= 8+2= 8+5=
8+4= 8+3= 8+6= 8+7=
8+8= 8+9= 9+6= 9+8=
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