题目内容
(1)已知
| (2)5X+5×2.4-x=18.48 | ||||||||||||||||||||
(3)(1
| (4)2008÷2008
| ||||||||||||||||||||
(5)(9
| (6)
|
(1)
| 6.4 |
| x |
0.12X=6.4×1.5,
0.12X=9.6,
0.12X÷0.12=9.6÷0.12,
X=80;
(2)5x+5×2.4-x=18.48,
4x+12=18.48,
4x+12-12=18.48-12,
4x=6.48,
4x÷4=6.48÷4,
x=1.62;
(3)(1
| 1 |
| 2 |
| 1 |
| 5 |
| 3 |
| 8 |
| 3 |
| 8 |
| 4 |
| 5 |
=1
| 1 |
| 2 |
| 1 |
| 5 |
| 3 |
| 8 |
| 3 |
| 8 |
| 4 |
| 5 |
=1
| 1 |
| 2 |
| 1 |
| 5 |
| 4 |
| 5 |
| 3 |
| 8 |
| 3 |
| 8 |
=1
| 1 |
| 2 |
=
| 1 |
| 2 |
(4)2008÷2008
| 2008 |
| 2009 |
=2008÷
| 2008×2009+2008 |
| 2009 |
=2008÷
| 2008×(2009+1) |
| 2009 |
=2008÷
| 2008×2010 |
| 2009 |
=2008×
| 2009 |
| 2008×2010 |
=
| 2009 |
| 2010 |
(5)(9
| 2 |
| 7 |
| 2 |
| 9 |
| 5 |
| 7 |
| 5 |
| 9 |
=16
| 32 |
| 63 |
| 80 |
| 63 |
=16
| 32 |
| 63 |
| 63 |
| 80 |
=(16+
| 32 |
| 63 |
| 63 |
| 80 |
=16×
| 63 |
| 80 |
| 32 |
| 63 |
| 63 |
| 80 |
=
| 63 |
| 5 |
| 2 |
| 5 |
=13;
(6)
| 1 |
| 3 |
| 1 |
| 15 |
| 1 |
| 35 |
| 1 |
| 63 |
| 1 |
| 99 |
| 1 |
| 143 |
=
| 1 |
| 1×3 |
| 1 |
| 3×5 |
| 1 |
| 5×7 |
| 1 |
| 7×9 |
| 1 |
| 9×11 |
| 1 |
| 11×13 |
=
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 9 |
| 1 |
| 9 |
| 1 |
| 11 |
| 1 |
| 11 |
| 1 |
| 13 |
=
| 1 |
| 2 |
| 1 |
| 13 |
=
| 1 |
| 2 |
| 12 |
| 13 |
=
| 6 |
| 13 |
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