1、精選優(yōu)質(zhì)文檔-傾情為你奉上簡便運算（乘法分配律）450道28 × 29 + 42 × 29 =34 × 38 + 46 × 38 =7 × 70 + 7 × 20 =71 × 68 + 71 × 22 =72 × 11 + 72 × 49 =27 × 24 + 27 × 46 =55 × 43 + 55 × 17 =76 × 3 + 76 × 77 =45 × 68 + 5 × 68 =61 × 23 +

2、61 × 37 =30 × 35 + 30 × 35 =4 × 84 + 66 × 84 =46 × 49 + 46 × 1 =52 × 96 + 8 × 96 =34 × 19 + 36 × 19 =46 × 39 + 44 × 39 =30 × 65 + 30 × 5 =83 × 36 + 83 × 4 =27 × 34 + 23 × 34 =27 × 75 + 27 × 15 =5

3、 × 30 + 5 × 20 =34 × 84 + 6 × 84 =62 × 6 + 62 × 24 =26 × 5 + 64 × 5 =4 × 86 + 16 × 86 =36 × 52 + 4 × 52 =3 × 87 + 67 × 87 =76 × 39 + 76 × 11 =55 × 99 + 15 × 99 =61 × 29 + 29 × 29 =54 × 70 + 6 

4、15; 70 =19 × 32 + 19 × 48 =53 × 26 + 27 × 26 =25 × 28 + 55 × 28 =3 × 53 + 57 × 53 =67 × 15 + 67 × 55 =64 × 24 + 64 × 6 =74 × 47 + 74 × 33 =84 × 78 + 84 × 2 =9 × 68 + 61 × 68 =54 × 9 + 54 × 21 =48 

5、5; 27 + 48 × 3 =75 × 44 + 5 × 44 =28 × 2 + 32 × 2 =5 × 5 + 5 × 25 =62 × 48 + 62 × 2 =37 × 35 + 23 × 35 =48 × 63 + 48 × 17 =48 × 88 + 22 × 88 =12 × 91 + 78 × 91 =83 × 35 + 83 × 5 =81 × 35 + 81 × 1

6、5 =20 × 44 + 60 × 44 =63 × 17 + 63 × 13 =25 × 68 + 45 × 68 =22 × 86 + 58 × 86 =26 × 90 + 34 × 90 =36 × 8 + 54 × 8 =66 × 92 + 14 × 92 =3 × 30 + 3 × 20 =7 × 52 + 7 × 38 =7 × 82 + 43 × 82 =75 × 64 +

7、 75 × 26 =24 × 36 + 24 × 24 =26 × 2 + 26 × 68 =37 × 31 + 37 × 59 =98 × 25 + 98 × 35 =78 × 5 + 78 × 25 =21 × 21 + 21 × 69 =27 × 77 + 43 × 77 =9 × 40 + 9 × 50 =31 × 12 + 31 × 78 =56 × 40 + 56 × 10

8、=53 × 46 + 37 × 46 =2 × 32 + 58 × 32 =14 × 30 + 56 × 30 =93 × 29 + 93 × 61 =23 × 10 + 23 × 50 =11 × 90 + 29 × 90 =32 × 12 + 32 × 68 =27 × 63 + 13 × 63 =54 × 26 + 54 × 44 =96 × 2 + 96 × 58 =70 × 5

9、9 + 20 × 59 =94 × 3 + 94 × 77 =92 × 11 + 92 × 19 =77 × 51 + 77 × 9 =24 × 2 + 26 × 2 =8 × 32 + 62 × 32 =41 × 58 + 39 × 58 =65 × 10 + 65 × 70 =40 × 22 + 40 × 28 =21 × 2 + 39 × 2 =60 × 24 + 20 × 24

10、=22 × 62 + 68 × 62 =26 × 62 + 64 × 62 =14 × 2 + 14 × 88 =1 × 58 + 69 × 58 =12 × 47 + 48 × 47 =63 × 5 + 63 × 35 =3 × 26 + 77 × 26 =50 × 53 + 50 × 27 =87 × 6 + 87 × 24 =3 × 29 + 3 × 21 =33 × 63 + 4

11、7 × 63 =29 × 86 + 1 × 86 =77 × 37 + 77 × 3 =95 × 11 + 95 × 79 =15 × 51 + 55 × 51 =37 × 62 + 53 × 62 =1 × 47 + 79 × 47 =33 × 50 + 33 × 10 =64 × 83 + 26 × 83 =32 × 98 + 28 × 98 =6 × 32 + 54 × 32 =1

12、3 × 31 + 37 × 31 =45 × 5 + 35 × 5 =27 × 62 + 27 × 28 =5 × 74 + 5 × 74 =1 × 97 + 89 × 97 =76 × 44 + 4 × 44 =4 × 10 + 4 × 20 =83 × 81 + 7 × 81 =99 × 36 + 99 × 24 =76 × 45 + 4 × 45 =25 × 52 + 15 

13、15; 52 =11 × 46 + 11 × 4 =79 × 59 + 79 × 11 =54 × 35 + 54 × 55 =5 × 85 + 35 × 85 =11 × 10 + 11 × 10 =14 × 11 + 66 × 11 =51 × 97 + 29 × 97 =17 × 36 + 23 × 36 =76 × 96 + 4 × 96 =88 × 43 + 88 × 17 =71 &#

14、215; 14 + 71 × 56 =59 × 4 + 11 × 4 =11 × 62 + 49 × 62 =44 × 47 + 46 × 47 =86 × 56 + 86 × 34 =77 × 22 + 13 × 22 =61 × 57 + 61 × 33 =79 × 10 + 79 × 60 =69 × 3 + 69 × 27 =9 × 69 + 81 × 69 =6 × 15 + 6 

15、15; 15 =51 × 20 + 51 × 20 =39 × 99 + 11 × 99 =22 × 58 + 28 × 58 =1 × 1 + 59 × 1 =13 × 12 + 13 × 68 =54 × 64 + 54 × 26 =21 × 35 + 19 × 35 =6 × 3 + 6 × 67 =11 × 28 + 11 × 22 =10 × 45 + 60 × 45 =75 ×

16、; 43 + 5 × 43 =76 × 80 + 76 × 10 =39 × 57 + 1 × 57 =55 × 87 + 15 × 87 =77 × 1 + 77 × 19 =1 × 53 + 1 × 7 =30 × 61 + 20 × 61 =44 × 51 + 26 × 51 =74 × 36 + 74 × 14 =61 × 1 + 9 × 1 =20 × 8 + 10 × 8 =

17、89 × 28 + 89 × 12 =12 × 99 + 48 × 99 =91 × 55 + 91 × 5 =50 × 1 + 50 × 49 =39 × 55 + 51 × 55 =54 × 55 + 54 × 35 =56 × 41 + 56 × 49 =4 × 73 + 36 × 73 =54 × 93 + 16 × 93 =54 × 12 + 54 × 18 =16 × 44

18、+ 24 × 44 =74 × 23 + 16 × 23 =64 × 10 + 64 × 50 =20 × 2 + 60 × 2 =86 × 68 + 86 × 12 =70 × 17 + 70 × 3 =33 × 29 + 27 × 29 =79 × 70 + 11 × 70 =23 × 73 + 7 × 73 =26 × 62 + 4 × 62 =11 × 35 + 79 × 35

19、=29 × 5 + 11 × 5 =28 × 84 + 32 × 84 =29 × 28 + 29 × 2 =40 × 35 + 40 × 5 =38 × 5 + 32 × 5 =5 × 31 + 5 × 31 =49 × 32 + 49 × 38 =32 × 37 + 32 × 23 =74 × 72 + 6 × 72 =20 × 49 + 40 × 49 =43 × 48 + 43

20、× 12 =24 × 10 + 24 × 70 =39 × 8 + 39 × 82 =23 × 4 + 23 × 86 =28 × 8 + 42 × 8 =82 × 33 + 82 × 57 =42 × 26 + 42 × 24 =47 × 5 + 47 × 75 =34 × 15 + 26 × 15 =30 × 60 + 30 × 60 =67 × 34 + 67 × 6 =56 &#

21、215; 18 + 56 × 2 =27 × 80 + 43 × 80 =47 × 98 + 43 × 98 =60 × 63 + 60 × 27 =10 × 95 + 80 × 95 =36 × 36 + 36 × 54 =23 × 37 + 37 × 37 =66 × 57 + 4 × 57 =30 × 78 + 60 × 78 =52 × 21 + 52 × 39 =22 × 66 + 58

22、 × 66 =25 × 70 + 25 × 20 =58 × 92 + 2 × 92 =98 × 29 + 98 × 61 =68 × 6 + 68 × 4 =1 × 90 + 59 × 90 =3 × 71 + 77 × 71 =27 × 22 + 53 × 22 =11 × 20 + 59 × 20 =53 × 12 + 37 × 12 =36 × 35 + 36 × 15 =19

23、× 92 + 51 × 92 =3 × 78 + 57 × 78 =13 × 43 + 57 × 43 =16 × 5 + 24 × 5 =3 × 12 + 57 × 12 =10 × 39 + 30 × 39 =95 × 56 + 95 × 4 =13 × 22 + 17 × 22 =91 × 7 + 91 × 43 =56 × 61 + 34 × 61 =16 × 7 + 54 &#

24、215; 7 =25 × 61 + 55 × 61 =9 × 49 + 1 × 49 =27 × 7 + 63 × 7 =1 × 47 + 9 × 47 =22 × 30 + 22 × 40 =69 × 97 + 21 × 97 =17 × 89 + 33 × 89 =79 × 74 + 1 × 74 =5 × 66 + 5 × 4 =44 × 78 + 44 × 12 =8 × 3 +

25、 8 × 17 =46 × 5 + 34 × 5 =77 × 69 + 13 × 69 =20 × 48 + 40 × 48 =59 × 74 + 11 × 74 =64 × 19 + 16 × 19 =40 × 52 + 40 × 38 =57 × 42 + 23 × 42 =57 × 31 + 57 × 39 =49 × 74 + 49 × 6 =44 × 34 + 26 × 34

26、=4 × 50 + 46 × 50 =37 × 56 + 3 × 56 =1 × 55 + 69 × 55 =13 × 35 + 67 × 35 =10 × 6 + 10 × 14 =67 × 4 + 23 × 4 =81 × 47 + 9 × 47 =77 × 15 + 77 × 55 =36 × 12 + 36 × 48 =2 × 91 + 68 × 91 =2 × 2 + 2 &#

27、215; 38 =29 × 27 + 29 × 43 =26 × 16 + 26 × 4 =5 × 18 + 55 × 18 =19 × 74 + 71 × 74 =19 × 94 + 31 × 94 =57 × 35 + 3 × 35 =66 × 29 + 66 × 1 =1 × 57 + 79 × 57 =51 × 57 + 51 × 3 =35 × 17 + 35 × 3 =7 ×

28、 4 + 7 × 16 =47 × 10 + 47 × 10 =1 × 43 + 79 × 43 =41 × 74 + 9 × 74 =8 × 65 + 72 × 65 =4 × 44 + 4 × 26 =6 × 73 + 6 × 17 =40 × 29 + 40 × 61 =23 × 60 + 23 × 30 =29 × 33 + 1 × 33 =56 × 9 + 24 × 9 =11

29、 × 73 + 79 × 73 =7 × 59 + 83 × 59 =90 × 29 + 90 × 1 =55 × 49 + 55 × 1 =74 × 46 + 74 × 24 =63 × 51 + 63 × 39 =67 × 35 + 67 × 45 =20 × 80 + 50 × 80 =67 × 7 + 23 × 7 =33 × 73 + 57 × 73 =70 × 55 + 70

30、 × 15 =9 × 2 + 31 × 2 =11 × 13 + 11 × 17 =13 × 62 + 77 × 62 =74 × 51 + 74 × 9 =51 × 10 + 29 × 10 =82 × 22 + 82 × 8 =14 × 98 + 26 × 98 =75 × 54 + 75 × 36 =94 × 57 + 94 × 13 =90 × 11 + 90 × 39 =50

31、× 17 + 50 × 3 =32 × 57 + 18 × 57 =88 × 87 + 88 × 3 =76 × 39 + 76 × 41 =50 × 37 + 20 × 37 =1 × 5 + 19 × 5 =5 × 20 + 5 × 10 =62 × 18 + 28 × 18 =75 × 87 + 75 × 3 =46 × 7 + 24 × 7 =3 × 2 + 3 × 7

32、8 =14 × 21 + 14 × 9 =32 × 62 + 58 × 62 =27 × 18 + 23 × 18 =6 × 18 + 6 × 32 =39 × 39 + 39 × 31 =45 × 6 + 45 × 34 =32 × 22 + 32 × 38 =16 × 1 + 34 × 1 =22 × 1 + 58 × 1 =7 × 65 + 13 × 65 =74 × 46 + 7

33、4 × 14 =8 × 21 + 52 × 21 =62 × 4 + 28 × 4 =62 × 54 + 62 × 16 =80 × 51 + 80 × 39 =60 × 31 + 60 × 9 =58 × 28 + 58 × 2 =15 × 60 + 15 × 30 =64 × 47 + 64 × 23 =51 × 64 + 19 × 64 =53 × 79 + 17 × 79 =29

34、 × 58 + 11 × 58 =56 × 4 + 34 × 4 =3 × 2 + 37 × 2 =40 × 20 + 40 × 60 =48 × 37 + 48 × 43 =94 × 3 + 94 × 47 =25 × 2 + 65 × 2 =52 × 21 + 52 × 59 =56 × 43 + 56 × 27 =2 × 74 + 48 × 74 =98 × 27 + 98 

35、15; 13 =59 × 46 + 31 × 46 =68 × 14 + 22 × 14 =13 × 46 + 13 × 14 =18 × 6 + 18 × 74 =26 × 39 + 26 × 11 =68 × 87 + 12 × 87 =12 × 53 + 12 × 17 =50 × 75 + 50 × 15 =68 × 2 + 68 × 28 =88 × 55 + 88 × 5 =57 &#

36、215; 43 + 57 × 37 =69 × 30 + 1 × 30 =64 × 45 + 64 × 5 =97 × 25 + 97 × 65 =32 × 21 + 58 × 21 =82 × 38 + 82 × 42 =33 × 14 + 33 × 46 =91 × 24 + 91 × 46 =38 × 44 + 2 × 44 =19 × 45 + 19 × 35 =48 × 25 + 48

37、× 45 =82 × 9 + 82 × 11 =28 × 43 + 12 × 43 =12 × 39 + 12 × 1 =72 × 3 + 72 × 57 =12 × 30 + 12 × 60 =62 × 93 + 28 × 93 =43 × 45 + 43 × 25 =42 × 46 + 28 × 46 =44 × 4 + 44 × 86 =49 × 34 + 41 × 34 =99

38、× 86 + 99 × 4 =29 × 1 + 29 × 79 =57 × 13 + 57 × 77 =11 × 15 + 49 × 15 =39 × 52 + 21 × 52 =82 × 26 + 82 × 34 =29 × 38 + 51 × 38 =3 × 40 + 87 × 40 =53 × 48 + 7 × 48 =19 × 80 + 71 × 80 =7 × 17 + 7 × 73 =71 × 37 + 71 × 53 =51 × 53 + 29 × 53 =36 × 73 + 36 × 7 =4 × 23 + 66 × 23 =54 × 49 +