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1、十几减8、7、6的练习11 9 = 12 9 = 13 9 = 14 9 = 15 9 = 16 9 = 17 9 = 18 9 = 你发现了什么?2345678911 9 = 212 9 = 313 9 = 414 9 = 515 9 = 616 9 = 717 9 = 818 9 = 9十几减十几减9,是几加是几加111 8 = 12 8 = 13 8 = 14 8 = 15 8 = 16 8 = 17 8 = 你发现了什么?345678911 8 = 312 8 = 413 8 = 514 8 = 615 8 = 716 8 = 8十几减十几减8,是几加是几加211 7 = 12 7 =
2、 13 7 = 14 7 = 15 7 = 16 7 = 你发现了什么?45678911 7 = 412 7 = 513 7 = 614 7 = 715 7 = 816 7 = 9十几减十几减7,是几加是几加311 6 = 12 6 = 13 6 = 14 6 = 15 6 = 你发现了什么?5678911 6 = 512 6 = 613 6 = 714 6 = 815 6 = 9十几减十几减6,是几加是几加4 破十法儿歌破十法儿歌 退位减,我会算退位减,我会算十几减十几减9,是几加,是几加1,十几减十几减8,是几加,是几加2,十几减十几减7,是几加,是几加3,十几减十几减6,是几加,是几加4,十几减十几减5,是几加,是几加5.15 9 = 616 8 = 814 7 = 714 6 = 8 18 6 = 12 17 4 = 1316 4 = 12 15 1 = 14个位能够减个位能够减,不用退位减不用退位减个位不够减个位不够减,要用退位减要用退位减11 8 = 13 7 = 13 6 = 18 9 = 15 8 = 17 9 = 11 7 = 14 6 = 3679784815 9 = 12 7 = 13 9 = 15 7 = 11 6 = 16 9 = 17 8 = 14 8 = 654857969582615 6 13 8 14 7 17 9 11 9 12 6 7送信送信