Tính nhẩm:
23,7 :10 2,07 : 10 2,23 : 100 999,8 : 1000
Tính nhẩm:
23,7 :10 2,07 : 10 2,23 : 100 999,8 : 1000
tính nhẩm
43,2 : 10 0,65 : 10 432,9 : 100 13,96 : 1000
23, 7 : 10 2,07 : 10 2,23 : 100 999,8 : 1000
43,2 : 10 = 4,32 0,65 : 10 = 0,065 432,9 : 100 = 4,329 13,96 : 1000 = 0,01396
23,7 : 10 = 2,37 2,07 : 10 = 0,207 2,23 : 100 = 0,0223 999,8 : 1000 = 0,9998
43,2:10=4,32 0,65:10=0,065 432,9:100=4,329 13,96:1000=0,01396
32,7:10=2,37 2,07:10=0,207 2,23:100=0,0223 999,8:1000=0,9998
chuc ban hoc tot
Tính nhẩm 3,45×10 = ............
23,48 ×100 =............
9,1234 ×1000= ..........
4,067 ×10 = ............
0,238×100 =............
0,078 ×1000 = ..........
0,45 ×10 = ............
4,8 ×100 =............
9,4×1000 = ..........
Bài 9. Tính nhẩm
441,5 ×0,1 = ............
607,18×0,01 =............
522,4 ×0,001 = ..........
14,5 ×0,1 = ............
67,24 ×0,01 =............
98,01 ×0,001 = ..........
5,5 ×0,1 = ............
2,4 ×0,01 =............
1,1 ×0,001 = ..........
Tính nhẩm 3,45×10 = ............34,5
23,48 ×100 =............2348
9,1234 ×1000= ..........9123,4
4,067 ×10 = ............40,67
0,238×100 =............23,8
0,078 ×1000 = ..........78
0,45 ×10 = ............4,5
4,8 ×100 =............480
9,4×1000 = ..........9400
Bài 9. Tính nhẩm
441,5 ×0,1 = ...........44,15
607,18×0,01 =............6,0718
522,4 ×0,001 = ..........0,5224
14,5 ×0,1 = ............1,45
67,24 ×0,01 =............0,6724
98,01 ×0,001 = ..........0,09801
5,5 ×0,1 = ............0,55
2,4 ×0,01 =............0,024
1,1 ×0,001 = ..........0,0011
Tính nhẩm 3,45×10 = ...34,5.........
23,48 ×100 =.....2348.......
9,1234 ×1000= .....9123,4.....
4,067 ×10 = ....40,67........
0,238×100 =...23,8.........
0,078 ×1000 = ...78.......
0,45 ×10 = .....4,5.......
4,8 ×100 =....480........
9,4×1000 = ....9400......
Bài 9. Tính nhẩm
441,5 ×0,1 = ......44,15......
607,18×0,01 =...6,0718.........
522,4 ×0,001 = ....0,5224......
14,5 ×0,1 = ..1,45..........
67,24 ×0,01 =......0,6724......
98,01 ×0,001 = ..0,9801........
5,5 ×0,1 = ....0,55........
2,4 ×0,01 =...0,024.........
1,1 ×0,001 = ..0,0011........
Tính nhẩm 3,45×10 = ....34,5........
23,48 ×100 =.......2348.....
9,1234 ×1000= 9123,4..........
4,067 ×10 = .40,67...........
0,238×100 =.......23,8.....
0,078 ×1000 = ....78......
0,45 ×10 = .....4,5......
4,8 ×100 =....480........
9,4×1000 = ......9400....
Bài 9. Tính nhẩm
441,5 ×0,1 = ..44,15..........
607,18×0,01 =......6,0718......
522,4 ×0,001 = ...0,5224.......
14,5 ×0,1 = .....1,45.......
67,24 ×0,01 =...0,6724.........
98,01 ×0,001 = ......0,09801....
5,5 ×0,1 = ..0,55..........
2,4 ×0,01 =........0,024....
1,1 ×0,001 = ......0,0011
Tính nhẩm:
25 , 3 × 10 =
46 , 589 × 1000 =
0 , 5001 × 1000 =
8 , 04 × 100 =
1 , 07 × 10 =
68 , 031 × 100 =
25 , 3 × 10 = 253
46 , 589 × 1000 = 46589
0 , 5001 × 1000 = 500 , 1
8 , 04 × 100 = 804
1 , 07 × 10 = 10 , 7
68 , 031 × 100 = 6803 , 1
Tính nhẩm:
25 , 3 × 10 = 0 , 5001 × 1000 = 46 , 589 × 1000 = 8 , 04 × 100 = 1 , 07 × 10 = 68 , 031 × 100 =
25 , 3 × 10 = 253 0 , 5001 × 1000 = 500 , 1 46 , 589 × 1000 = 46589 8 , 04 × 100 = 804 1 , 07 × 10 = 10 , 7 68 , 031 × 100 = 6803 , 1
Tính nhẩm:
a) 27 × 10 = …...; 72 × 100 =…...; 14 × 1000 =…...
86 × 10 = …...; 103 × 10 =…...; 452 × 1000 =…...
358 × 10 = …...; 1977 × 100 =…...; 300 × 1000 =…...
b) 80 : 10 = …...; 400 : 100 =…... ;6000 : 1000 =…...
300 : 10 = …...; 4000 : 100 =…... ;60000 : 1000 =…...
2000 : 10 =…...; 40000 : 100 =…... ;600000 : 1000 =…...
c) 64 × 10 =…...; 32 × 100 =…...; 95 × 1000 =…...
640 : 10 =…...; 3200 : 100 =…...; 95000 : 1000 =…...
a) 27 × 10 = 270; 72 × 100 = 7200; 14 × 1000 = 14000
86 × 10 = 860; 103 × 10 = 10300; 452 × 1000 = 452000
358 × 10 = 3580; 1977 × 100 = 197700; 300 × 1000 = 300000
b) 80 :10 = 8; 400 : 100 = 4 ;6000 : 1000 = 6
300 : 10 = 30; 4000 : 100 = 40 ; 60000 : 1000 = 60
2000 :10 = 200; 40000 :100 = 400 ;600000 : 1000 = 600
c) 64 × 10 = 640; 32 × 100 = 3200; 95 × 1000 = 95000
640 : 10 = 64; 3200 : 100 = 32; 95000 : 1000 = 95
Tính nhẩm:
14 , 326 × 1000 =
1 , 8 × 100 =
0 , 503 × 100 =
8 , 643 × 100 =
49 , 72 × 10 =
25 , 48 × 1000 =
14 , 326 × 1000 = 14326
1 , 8 × 100 = 180
0 , 503 × 100 = 50 , 3
8 , 643 × 100 = 864 , 3
49 , 72 × 10 = 497 , 2
25 , 48 × 1000 = 25480
Tính nhẩm:
14 , 326 × 1000 = 0 , 503 × 100 = 49 , 72 × 10 = 1 , 8 × 100 = 8 , 643 × 100 = 25 , 48 × 1000 =
14 , 326 × 1000 = 14326 0 , 503 × 100 = 5 , 03 49 , 72 × 10 = 497 , 2 1 , 8 × 100 = 180 8 , 643 × 100 = 864 , 3 25 , 48 × 1000 = 25480
Tính nhẩm:
1,48 x 10
5,12 x 100
2,571 x 1000
15,5 x 10
0,9 x 100
0,1 x 1000