Question

Đã trả lời bởi chuyên gia

Answer 1

18,24+63,6+36,4+30,76 = ( 18,24+30,76)+(63,6+36,4)= 49+100=149
74,29-(31,25+4,29) = 74,29 - 4,29 - 31,25 = 70 - 31,25 = 38,75
120,7-8,7-11,3 = 112-11,3 =100,7
60-26,75-13,25 = 60 - ( 26,75 + 13,25 )= 60 - 40 = 20
11,27 $\times$ 4,37+11,27 $\times$ 5,63 = 11,27 $\times (4, 37 + 5, 63) = 11, 27 \times 10 = 112, 7$
72,9 $\times$ 91+72,9 $\times$ 8+72,9 = $72, 9 \times (91 + 8 + 1) = 72, 9 \times 100 = 7290$

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Answer 2

18,24+63,6+36,4+30,76 = ( 18,24+30,76)+(63,6+36,4)= 49+100=149
74,29-(31,25+4,29) = 74,29 - 4,29 - 31,25 = 70 - 31,25 = 38,75
120,7-8,7-11,3 = 112-11,3 =100,7
60-26,75-13,25 = 60 - ( 26,75 + 13,25 )= 60 - 40 = 20
11,27 $\times$ 4,37+11,27 $\times$ 5,63 = 11,27 $\times (4, 37 + 5, 63) = 11, 27 \times 10 = 112, 7$
72,9 $\times$ 91+72,9 $\times$ 8+72,9 = $72, 9 \times (91 + 8 + 1) = 72, 9 \times 100 = 7290$

Answer 3

18,24 + 63,6 + 36,4 + 30,76

= ( 18,24 + 30,76 ) + ( 36,4 + 63,6 )

= 49 + 100

= 149

74,29 - ( 31,25 + 4,29)

= ( 74,29 - 4,29 ) + 31,25

= 70 + 31,25

= 101,25

120,7 - 8,7 - 11,3

= ( 120,7 - 8,7 ) - 11,3

= 112 - 11,3

= 100,7

60 - 26,75- 13,25

= 60 - ( 26,75 - 13,25 )

= 60 - 13,5

= 46,5

11,27 * 4,37 + 11,27 * 5,63

= 11,27 * ( 4,37 + 5,63 )

= 11.27 * 10

= 1.127

72,9 * 91 + 72,9 * 8 + 72,9

= 72,9 * ( 91 + 8 )

= 72,9 * 99

= 7217,1