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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529(10题)
8+5={#blank#}1{#/blank#}
14-7 6 18-9
13-7 5 12-6
15-7 7 11-6
12-3 9 16-9
13-8 8 17-9
11-6 16-8 10-5
7+5 12-4 14-9
12+0 15-7 17-9
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