Question

小学六年级上册简算题，要答案

Answer 1

2002乘20032003-2003乘20022002
=2002x20032003-(2002+1)20022002
=2002x20032003-2002x20022002-20022002
=2002(20032003-20022002)-20022002
=2002x10001-20022002
=2002x1001-2002x1001
=0

2+4+6+8+···+2004
=1005006
当n==1002时,
s=1002×(1002+1)=1005006.
即2+4+6+8+…+2004=1005006.

0.888乘125乘73+999乘3
125(0.8+0.08+0.008)x73+999x3
=(100+10+1)x73+111x9x3
=111x73+111x27
=111x100
=111001. 6÷ 3/8 – 3/8 ÷6
=1/6x(3/8-3/8)
=1/6x0
=0

2. 4/7 × 5/9 + 3/7 × 5/9
=(4/7+3/7)x5/9
=1x5/9
=5/9

3. 5/2 -（ 3/2 + 4/5 ）
=5/2-3/2-4/5
=1-4/5
=1/5

4. 6 ×（ 1/2 + 2/3 ）
=6x1/2+6x2/3
=3+4
=7

5. 8 × 4/5 + 8 × 11/5
=8x(4/5+11/5)
=8x3
=24

6. 31 × 5/6 – 5/6
=(31-1)x5/6
=30x5/6
=25

7. 4/5 × 25/16 + 2/3 × 3/4
=5/4+1/2
=5/4+2/4
=7/4

8. 101 × 1/5 – 1/5 × 21
=(101-21)x1/5
=80x1/5
=16

Answer 2

4/7 ÷8＋3/7 ×18 76%×36－36×26% 76×1.1－7.6 3.8×4/5 ＋5.2×80%＋0.8
=(4/7 ＋3/7 )×18 =(76%-26%)×36 =(1.1-0.1) ×76 =(3.8+5.2+1) ×0.8
=1×1/8 =0.5×36 =1×76 =10×0.8
=1/8 =18 =76 =8

0.125×0.57×8 8/25×99 + 8/25 204÷1/91 +204×9
=0.125×8×0.57 =8/25 ×(99+1) =204×(91+9)
=1×0.57 =8/25×100 =204×100
=0.57 =32 =20400

Answer 3

题目呢