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545(10题)
9+ | 1 | 3 | 6 | 4 | 8 | 5 | 2 | 7 | 10 | 9 | 0 |
(从左到右依次填写)
9+{#blank#}1{#/blank#}=10 | 9+{#blank#}2{#/blank#}=11 | 9+{#blank#}3{#/blank#}=12 |
9+{#blank#}4{#/blank#}=13 | 9+{#blank#}5{#/blank#}=14 | 9+{#blank#}6{#/blank#}=15 |
9+{#blank#}7{#/blank#}=16 | 9+{#blank#}8{#/blank#}=17 | 9+{#blank#}9{#/blank#}=18 |
规律:{#blank#}10{#/blank#}
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