根据商不变规律填数
420÷70= ( )÷7
3600÷400= ( )÷4
350÷70= ( )÷7
1200÷400= ( )÷100
490÷70= ( )÷700
4800÷800= ( )÷8
360÷60= 180÷( )
180÷30= 60÷( )
1500÷50= 750÷( )
3000÷60= 600÷( )
84÷( )= 168÷8
240÷( )= 480÷80
1800÷( )= 90÷5
650÷( )= 65÷13
500÷( )= 50÷2
( )÷2= 16÷4
( )÷200= 32÷5
( )÷8= 160÷40
( )÷90= 360÷9
420÷70= ( )÷7
3600÷400= ( )÷4
350÷70= ( )÷7
1200÷400= ( )÷100
490÷70= ( )÷700
4800÷800= ( )÷8
360÷60= 180÷( )
180÷30= 60÷( )
1500÷50= 750÷( )
3000÷60= 600÷( )
84÷( )= 168÷8
240÷( )= 480÷80
1800÷( )= 90÷5
650÷( )= 65÷13
500÷( )= 50÷2
( )÷2= 16÷4
( )÷200= 32÷5
( )÷8= 160÷40
( )÷90= 360÷9
答案:
42;36;35;300;4900;48;30;10;25;12;4;40;100;130;20;8;1280;32;3600
315÷5
=(315×
=
=
7500÷125
=(7500×
=
=
450÷25
=(450×
=
=
525÷25
=(525×
=
=
=(315×
2
)÷10=
630
÷10=
63
7500÷125
=(7500×
8
)÷1000=
60000
÷1000=
60
450÷25
=(450×
4
)÷100=
1800
÷100=
18
525÷25
=(525×
4
)÷100=
2100
÷100=
21
答案:
315÷5
=(315×2)÷10
=630÷10
=63
7500÷125
=(7500×8)÷1000
=60000÷1000
=60
450÷25
=(450×4)÷100
=1800÷100
=18
525÷25
=(525×4)÷100
=2100÷100
=21
=(315×2)÷10
=630÷10
=63
7500÷125
=(7500×8)÷1000
=60000÷1000
=60
450÷25
=(450×4)÷100
=1800÷100
=18
525÷25
=(525×4)÷100
=2100÷100
=21
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