2+36x36+8=????
Tính bằng cách thuận tiện nhất:
a)95x43,9+43,9x3+43,9+43,9
b)3,6x1,25x5x8
c)35,5+7,98+4,5
d)28,4x3,8+28,4x6,2
e)0,4x12,65x2,5
f)18x25+36x36+6x9
g)1,25x8,96x80
h)2+5+8+...+110+113
a/ 95x43,9+43,9x3+43,9+43,9
= 43,9x[95+43+1+1]
= 43,9x100
= 4390
24×96+8×3+24×3
36x36=...
Ai tl và kết bn nhanh nhất thì mik sẽ tik cho
1x1=
2x2=
3x3=
4x4=
5x5=
6x6=
7x7=
8x8=
9x9=
10x10=
11x11=
12x12=
13x13=
14x14=
15x15=
16x16=
17x17=
18x18=
19x19=
20x20=
21x21=
22x22=
23x23=
24x24=
25x25=
26x26=
27x27=
28x28=
29x29=
30x30=
31x31=
32x32=
33x33=
34x34=
35x35=
36x36=
37x37=
38x38=
39x39=
40x40=
AI NHANH MIK TICK CHO NHA!!!
1 . 1 = 1
2 . 2 = 4
3 . 3 = 9
4 . 4 = 16
5 . 5 = 25
6 . 6 = 36
7 . 7 = 49
8 . 8 = 64
9 . 9 = 81
10 . 10 = 100
11 . 11 = 121
12 . 12 = 144
13. 13 = 169
14 . 14 = 196
15 . 15 = 225
16 . 16 = 256
17 . 17 = 289
18 . 18 = 324
19 . 19 = 361
20 . 20 = 400
21. 21 = 441
22 . 22 = 484
23 . 23 = 529
24 . 24 = 576
25 . 25 = 625
26 . 26 = 676
27 . 27 = 729
28 . 28 = 784
29 . 29 = 841
30 . 30 = 900
31 . 31 = 961
32 . 32 = 1024
33 . 33 = 1089
34 . 34 = 1156
35 . 35 = 1225
36 . 36 = 1296
37 . 37 = 1369
38 . 38 = 1444
39 . 39 = 1521
40 . 40 = 1600
1 x 1 = 1
2 x 2 = 4
3 x 3 = 9
4 x 4 = 16
5 x 5 = 25
6 x 6 = 36
7 x 7 = 49
8 x 8 = 64
9 x 9 = 81
10 x 10 = 100
11 x 11 = 121
12 x 12 = 144
13 x 13 = 169
14 x 14 = 196
15 x 15 = 225
16 x 16 = 256
17 x 17 = 289
18 x 18 = 324
19 x 19 = 361
20 x 20 = 400
21 x 21 = 441
22 x 22 = 484
23 x 23 = 529
24 x 24 = 576
25 x 25 = 625
26 x 26 = 676
27 x 27 = 729
28 x 28 = 784
29 x 29 = 841
30 x 30 = 900
31 x 31 = 961
32 x 32 = 1024
33 x 33 = 1089
34 x 34 = 1156
35 x 35 = 1225
36 x 36 = 1296
37 x 37 = 1369
38 x 38 = 1444
39 x 39 = 1521
40 x 40 = 1600
~ Mỏi tay quá ~
1x1=1
2x2=4
3x3=9
4x4=16
5x5=25
6x6=36
7x7=49
8x8=64
9x9=81
10x10=100
11x11=121
12x12=144
13x13=169
14x14=196
15x15=225
16x16=256
17x17=289
18x18=324
19x19=361
20x20=400
21x21=441
22x22=484
23x23=529
24x24=576
25x25=625
26x26=676
27x27=729
28x28=784
29x29=841
30x30=900
31x31=961
32x32=1024
33x33=1089
34x34=1156
35x35=1225
36x36=1296
37x37=1369
38x38=1444
39x39=1521
40x40=1600
Tính:
8 – 3 = … | 8 – 5 = … | 8 – 6 = … | 8 – 8 = … |
8 – 1 – 2 = … | 8 – 2 – 3 = … | 8 – 5 – 1 = … | 8 – 0 = … |
8 – 2 – 1 = … | 8 – 3 – 2 = … | 8 – 1 – 5 = … | 8 + 0 = … |
Lời giải chi tiết:
8 – 3 = 5 | 8 – 5 = 3 | 8 – 6 = 2 | 8 – 8 = 0 |
8 – 1 – 2 = 5 | 8 – 2 – 3 = 3 | 8 – 5 – 1 = 2 | 8 – 0 = 8 |
8 – 2 – 1 = 5 | 8 – 3 – 2 = 3 | 8 – 1 – 5 = 2 | 8 + 0 = 8 |
8-3 =5 8-5=3 8-6=2 8-8=0
8-1-2=5 8-2-3=3 8-5-1=2 8-0=8
8-2-1=5 8-3-2=3 8-1-5=2 8+0=8
Tính:
8 - 4 = 8 - 5 = 8 - 8 =
8 - 1 - 3 = 8 - 2 - 3 = 8 - 0 =
8 - 2 - 2 = 8 - 1 - 4 = 8 + 0 =
8 - 4 = 4 8 - 5 = 3 8 - 8 = 0
8 - 1 - 3 = 4 8 - 2 - 3 = 3 8 - 0 = 8
8 - 2 - 2 = 4 8 - 1 - 4 = 3 8 + 0 = 8
A=(2-1/8).(2-2/8).(2-3/8).(2-4/8)...(2-100/8)
1. tính chất kết hợp:
viết tiếp vào chổ chấm:
( 3/8 + 2/8) +1/8=....
3/8 + ( 2/8 +1/8)=.....
( 3/8 + 2/8) + 1/8....3/8+(2/8+1/8)
( 3/8 + 2/8) +1/8= 3/8 + 2/8 +1/8= 3/8 + 3/8= 3/4
3/8 + (2/8 +1/8)= 3/8 + 2/8 +1/8= 3/8 + 3/8= 3/4
( 3/8 + 2/8) + 1/8....3/8+(2/8+1/8)= 3/4+.....+3/4
\(\left(\frac{3}{8}+\frac{2}{8}\right)+\frac{1}{8}=\frac{3}{8}+\left(\frac{2}{8}+\frac{1}{8}\right)=\frac{3}{8}+\frac{3}{8}=\frac{6}{8}=\frac{3}{4}\) (tính chất kết hợp)
\(\Rightarrow\left(\frac{3}{8}+\frac{2}{8}\right)+\frac{1}{8}=\frac{3}{8}+\left(\frac{1}{8}+\frac{2}{8}\right)\)
( 3/8 + 2/8 ) + 1/8
= 5/8 + 1/8
= 6/8
3/8 ( 2/8 + 1/8 )
= 3/8 + 3/8
= 6/8
( 3/8 + 2/8 ) + 1/8 = 3/8 + ( 2/8 + 1/8 )