两位数乘两位数经典巧算附答案

两位数乘两位数经典巧算附答案

2.

头十尾同

11

×

91=1001

12

×

92=1104

13

×

93=1209

14

×

94=

1316

15

×

95=1425

16

×

96=1536

17

×

97=1649

18

×

98=1764

19

×

99= 1881

21

×

91= 1901

22

×

82=1804

23

×

83=1909

24

×

84=2016

25

×

85= 2125

28

×

88= 2464

29

×

89= 2581

33

×

73= 2609

34

×

74=2516

37

×

77=2849

38

×

78=2964

42

×

62=2604

43

×

63=2709

46

×

66=3036

47

×

67=3149

51

×

51=2601

52

×

52=2704

56

×

56=3136

57

×

57=3249

两位数乘两位数经典巧算

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19

×

21=399

18

×

22= 396

15

×

25=375

14

×

26=364

11

×

29=319

29

×

31=899

36

×

34=884

25

×

35=875

22

×

38=836

21

×

39=819

37

×

43=1591

36

×

44=1584

33

×

47= 1551

32

×

48=1536

26

×

86= 2236

31

×

71=2201

35

×

75=2625

39

×

79=3081

44

×

64=2816

48

×

68=3264

53

×

53=2809

58

×

58=3364

17

×

23=391

13

×

27=

351

28

×

32=896

24

×

36= 864

39

×

41=1599

35

×

45=1575

31

×

49= 1519

27

×

87=2349

32

×

72=2304

36

×

76=2736

41

×

61=2501

45

×

65=2925

49

×

69=3381

54

×

54=2916

59

×

59=3481

16

×

24=384

12

×

28=336

27

×

33=891

23

×

37=851

38

×

42=1596

34

×

46=1564

49

×

51=2499