商店运进一批水果,草莓有9箱,桃子有24箱,草莓和桃子一共多少箱?
8+9=________ 6+7=________ 7-4=________ 8+1=________ 4+7=________
18+9=________ 16+7=________ 17-4=________ 18+1=________ 14+7=________
23+9=________ 12+7=________ 8+9=________ 6+15=________
17+8=________ 9+13=________ 27+6=________ 32+9=________
19+7=________ 16+6=________ 14+7=________ 25+7=________
17+8=________ 23+9=________ 56+7=________ 21+7=________ 32+5=________
18-8=________ 24+9=________ 36+7=________ 20+7=________ 30-5=________
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