十几减8、7、6练习(破十法儿歌) PPT

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7
9
5
15– 6
13– 8 14 – 7
17 – 9
2
11– 9
12 – 6
6
8
11 - 6 = 5 12 - 6 = 6 13 - 6 = 7 14 - 6 = 8 15 - 6 = 9
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破十法儿歌
退位减,我会算 十几减9,是几加1, 十几减8,是几加2, 十几减7,是几加3, 十几减6,是几加4, 十几减5,是几加5.
16 - 7 = 9
十几减7, 是几加3
11 - 7 = 4 12 - 7 = 5 13 - 7 = 6 14 - 7 = 7 15 - 7 = 8 16 - 7 = 9
ቤተ መጻሕፍቲ ባይዱ
11 - 6 = 5
12 - 6 = 6
13 - 6 = 7 14 - 6 = 8 15 - 6 = 9
十几减6, 是几加4
16 - 8 = 8 17 - 8 = 9
十几减8, 是几加2
11 - 8 = 3 12 - 8 = 4 13 - 8 = 5 14 - 8 = 6 15 - 8 = 7 16 - 8 = 8 17 - 8 = 9
11 - 7 = 4
12 - 7 = 5 13 - 7 = 6 14 - 7 = 7 15 - 7 = 8
11 - 8 = 3
13 - 7 = 6
13 - 6 = 7 18 - 9 = 9 15 - 8 = 7
17 - 9 = 8 11 - 7 = 4 14 - 6 = 8
15 - 9 = 6
12 - 7 = 5 13 - 9 = 4 15 - 7 = 8 11 - 6 = 5 16 - 9 = 7 17 - 8 = 9 14 - 8 = 6
个位不够减,要用退位减 个位能够减,不用退位减
15 – 9 = 6
18 – 6 = 12
16 – 8 = 8
17 – 4 = 13
14 – 7 = 7
16 – 4 = 12
14 – 6 = 8
15 – 1 = 14
11 - 9 = 2
12 - 9 = 3
13 - 9 = 4 14 - 9 = 5 15 - 9 = 6
16 - 9 = 7 17 - 9 = 8 18 - 9 = 9
11 - 9 = 2
12 - 9 = 3
十几减9, 13 - 9 = 4
是几加1
14 - 9 = 5 15 - 9 = 6
16 - 9 = 7
17 - 9 = 8
18 - 9 = 9
11 - 8 = 3
12 - 8 = 4
13 - 8 = 5 14 - 8 = 6 15 - 8 = 7
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