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题型:填空题 题类:常考题 难易度:困难
20以内的进位加法和退位减法465(10题)
☆☆=○○○ ○=△△△△
☆☆+○○=个○
☆☆+☆☆+○=个○
☆☆-△△△△=个○
4 × 1 = 3 × 2 = 6 × 2 = 1 × 8 =
4 + 1 = 3 + 2 = 6 + 2 = 1 + 8 =
7{#blank#}1{#/blank#}9 4{#blank#}2{#/blank#}2 1+8{#blank#}3{#/blank#}7 4-1{#blank#}4{#/blank#}10-7
0{#blank#}5{#/blank#}1 6{#blank#}6{#/blank#}6 4{#blank#}7{#/blank#}2+5 3+4{#blank#}8{#/blank#}5+1
74+2 10+010-0
67+2 7+38-1
4+36 5+28-2
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