1 000 000以内的减法
TRANSCRIPT
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000 000
以内的减法
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记得：
向右对齐
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口诀
：
大 – 小 =
小
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25 35 - 2 562 = ？
25 135
― 2
562
37522
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小练习
1.27 756 - 4
356 =
2.286 231 -
183 =
3.456 789 - 56
23 400
286 048
400 551
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未知
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大 – 小 = 小
a.
18 990 – ( )
= 8 990
找“小”要用“—”
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18 990 – ( )
= 8 990
18 990 – 8 990 =18 990
― 8 99000001
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!
"#$#%&
2' 500 - ( 600 – 15 200 = )
*+,)./ 2' 5004*7 ( 600
+,7 15 200 89:
的;)的4)7<？
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2! >?@)？AB$CD&#E
( 600 F 15 200 F ) = 2' 500
( 600F15 200FA E = 2' 500
不明白？
？
这个呢？
？
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3!
GHIJ的%&
) = 2' 500–( 600–15 200
= 5 (00
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1!K大L7 M2 0N0 OLP4QRP7 30 0'' O8STP7 U
O4 U;<？2!VWX7YZ的[\+]^\
_\`7 61 000 a4[\`7
32 000 a+]^\`7 ba+_\`7 6 000 a4cd b的
e4
小练习
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大 – 小 = 小
b.
( ) – 7 065 =
4 000
找“大”要用“
Ff
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7 065 + 4 000 =
7 065+ 4 000
56011
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!
"#$#%&
g h – ( '00 – 2 000 = 300
$ijklmnoH
( '00pqjkrsti82 000r utiv8nDw9
:300jk4xyzimn
{7<pqjk？
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2! >?@{7？AB$CD&#E
( '00 F 2 000 F 300 = {7
3! 写出正确的横式：
原有 = ( '00 F 2 000 F 300
= 10 100
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|}练习
1. 67 903 – 43 177 =
2. 34 021 – 122 – 5 411 =
3. 76 654 – ( ) = 18 945
4. 288 670 – ( ) – 80 122 =79 465
5. ( ) – 7 000 = 13 000
6. ( ) - 574 099 – 657 =897 012