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(1)240×50%=(2)6.25:524=(3)5−4÷45=(4)21×13−0.375÷18=(5)0.75÷0.15−0.375×45=(6)10×356÷356×10=(7)1.25×99.99×0.4×8×2.5=(8)213×12.5×67×8=
题目详情
(1)240×50%=
(2)6.25:
=
(3)5−4÷
=
(4)21×
−0.375÷
=
(5)0.75÷0.15−0.375×
=
(6)10×3
÷3
×10=
(7)1.25×99.99×0.4×8×2.5=
(8)2
×12.5×
×8=
6.25:
=
(3)5−4÷
=
(4)21×
−0.375÷
=
(5)0.75÷0.15−0.375×
=
(6)10×3
÷3
×10=
(7)1.25×99.99×0.4×8×2.5=
(8)2
×12.5×
×8=
5 5 24 24
5−4÷
=
(4)21×
−0.375÷
=
(5)0.75÷0.15−0.375×
=
(6)10×3
÷3
×10=
(7)1.25×99.99×0.4×8×2.5=
(8)2
×12.5×
×8=
4 4 5 5
21×
−0.375÷
=
(5)0.75÷0.15−0.375×
=
(6)10×3
÷3
×10=
(7)1.25×99.99×0.4×8×2.5=
(8)2
×12.5×
×8=
1 1 3 3
1 1 8 8
0.75÷0.15−0.375×
=
(6)10×3
÷3
×10=
(7)1.25×99.99×0.4×8×2.5=
(8)2
×12.5×
×8=
4 4 5 5
10×3
÷3
×10=
(7)1.25×99.99×0.4×8×2.5=
(8)2
×12.5×
×8=
5 5 6 6
5 5 6 6
2
×12.5×
×8=
1 1 3 3
6 6 7 7
(2)6.25:
5 |
24 |
(3)5−4÷
4 |
5 |
(4)21×
1 |
3 |
1 |
8 |
(5)0.75÷0.15−0.375×
4 |
5 |
(6)10×3
5 |
6 |
5 |
6 |
(7)1.25×99.99×0.4×8×2.5=
(8)2
1 |
3 |
6 |
7 |
6.25:
5 |
24 |
(3)5−4÷
4 |
5 |
(4)21×
1 |
3 |
1 |
8 |
(5)0.75÷0.15−0.375×
4 |
5 |
(6)10×3
5 |
6 |
5 |
6 |
(7)1.25×99.99×0.4×8×2.5=
(8)2
1 |
3 |
6 |
7 |
5 |
24 |
5−4÷
4 |
5 |
(4)21×
1 |
3 |
1 |
8 |
(5)0.75÷0.15−0.375×
4 |
5 |
(6)10×3
5 |
6 |
5 |
6 |
(7)1.25×99.99×0.4×8×2.5=
(8)2
1 |
3 |
6 |
7 |
4 |
5 |
21×
1 |
3 |
1 |
8 |
(5)0.75÷0.15−0.375×
4 |
5 |
(6)10×3
5 |
6 |
5 |
6 |
(7)1.25×99.99×0.4×8×2.5=
(8)2
1 |
3 |
6 |
7 |
1 |
3 |
1 |
8 |
0.75÷0.15−0.375×
4 |
5 |
(6)10×3
5 |
6 |
5 |
6 |
(7)1.25×99.99×0.4×8×2.5=
(8)2
1 |
3 |
6 |
7 |
4 |
5 |
10×3
5 |
6 |
5 |
6 |
(7)1.25×99.99×0.4×8×2.5=
(8)2
1 |
3 |
6 |
7 |
5 |
6 |
5 |
6 |
2
1 |
3 |
6 |
7 |
1 |
3 |
6 |
7 |
▼优质解答
答案和解析
(1)240×50%=120;
(2)6.25:
=30;
(3)5−4÷
=5-5,
=0;
(4)21×
−0.375÷
=7-3,
=4;
(5)0.75÷0.15−0.375×
=5-0.3,
=4.7;
(6)10×3
÷3
×10
=3
÷3
×10×10,
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
×12.5×
×8
=
×
×(12.5×8),
=1×100,
=100. 6.25:
5 5 524 24 24=30;
(3)5−4÷
=5-5,
=0;
(4)21×
−0.375÷
=7-3,
=4;
(5)0.75÷0.15−0.375×
=5-0.3,
=4.7;
(6)10×3
÷3
×10
=3
÷3
×10×10,
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
×12.5×
×8
=
×
×(12.5×8),
=1×100,
=100. 5−4÷
4 4 45 5 5
=5-5,
=0;
(4)21×
−0.375÷
=7-3,
=4;
(5)0.75÷0.15−0.375×
=5-0.3,
=4.7;
(6)10×3
÷3
×10
=3
÷3
×10×10,
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
×12.5×
×8
=
×
×(12.5×8),
=1×100,
=100. 21×
1 1 13 3 3−0.375÷
1 1 18 8 8
=7-3,
=4;
(5)0.75÷0.15−0.375×
=5-0.3,
=4.7;
(6)10×3
÷3
×10
=3
÷3
×10×10,
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
×12.5×
×8
=
×
×(12.5×8),
=1×100,
=100. 0.75÷0.15−0.375×
4 4 45 5 5
=5-0.3,
=4.7;
(6)10×3
÷3
×10
=3
÷3
×10×10,
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
×12.5×
×8
=
×
×(12.5×8),
=1×100,
=100. 10×3
5 5 56 6 6÷3
5 5 56 6 6×10
=3
÷3
×10×10,
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
×12.5×
×8
=
×
×(12.5×8),
=1×100,
=100.
5 5 56 6 6÷3
×10×10,
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
×12.5×
×8
=
×
×(12.5×8),
=1×100,
=100.
5 5 56 6 6×10×10,
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
×12.5×
×8
=
×
×(12.5×8),
=1×100,
=100. 2
1 1 13 3 3×12.5×
6 6 67 7 7×8
=
×
×(12.5×8),
=1×100,
=100.
7 7 73 3 3×
×(12.5×8),
=1×100,
=100.
6 6 67 7 7×(12.5×8),
=1×100,
=100.
(2)6.25:
5 |
24 |
(3)5−4÷
4 |
5 |
=5-5,
=0;
(4)21×
1 |
3 |
1 |
8 |
=7-3,
=4;
(5)0.75÷0.15−0.375×
4 |
5 |
=5-0.3,
=4.7;
(6)10×3
5 |
6 |
5 |
6 |
=3
5 |
6 |
5 |
6 |
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
1 |
3 |
6 |
7 |
=
7 |
3 |
6 |
7 |
=1×100,
=100. 6.25:
5 |
24 |
(3)5−4÷
4 |
5 |
=5-5,
=0;
(4)21×
1 |
3 |
1 |
8 |
=7-3,
=4;
(5)0.75÷0.15−0.375×
4 |
5 |
=5-0.3,
=4.7;
(6)10×3
5 |
6 |
5 |
6 |
=3
5 |
6 |
5 |
6 |
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
1 |
3 |
6 |
7 |
=
7 |
3 |
6 |
7 |
=1×100,
=100. 5−4÷
4 |
5 |
=5-5,
=0;
(4)21×
1 |
3 |
1 |
8 |
=7-3,
=4;
(5)0.75÷0.15−0.375×
4 |
5 |
=5-0.3,
=4.7;
(6)10×3
5 |
6 |
5 |
6 |
=3
5 |
6 |
5 |
6 |
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
1 |
3 |
6 |
7 |
=
7 |
3 |
6 |
7 |
=1×100,
=100. 21×
1 |
3 |
1 |
8 |
=7-3,
=4;
(5)0.75÷0.15−0.375×
4 |
5 |
=5-0.3,
=4.7;
(6)10×3
5 |
6 |
5 |
6 |
=3
5 |
6 |
5 |
6 |
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
1 |
3 |
6 |
7 |
=
7 |
3 |
6 |
7 |
=1×100,
=100. 0.75÷0.15−0.375×
4 |
5 |
=5-0.3,
=4.7;
(6)10×3
5 |
6 |
5 |
6 |
=3
5 |
6 |
5 |
6 |
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
1 |
3 |
6 |
7 |
=
7 |
3 |
6 |
7 |
=1×100,
=100. 10×3
5 |
6 |
5 |
6 |
=3
5 |
6 |
5 |
6 |
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
1 |
3 |
6 |
7 |
=
7 |
3 |
6 |
7 |
=1×100,
=100.
5 |
6 |
5 |
6 |
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
1 |
3 |
6 |
7 |
=
7 |
3 |
6 |
7 |
=1×100,
=100.
5 |
6 |
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
1 |
3 |
6 |
7 |
=
7 |
3 |
6 |
7 |
=1×100,
=100. 2
1 |
3 |
6 |
7 |
=
7 |
3 |
6 |
7 |
=1×100,
=100.
7 |
3 |
6 |
7 |
=1×100,
=100.
6 |
7 |
=1×100,
=100.
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