Cách 1:
\(A=26,54\times\left(27-17\right)=26,54\times10=265,4\)
\(B=9,03\times\left(24+76\right)=9,03\times100=903\)
\(C=5,21\times\left(83-79+6\right)=5,21\times10=52,1\)
\(D=8,5\left(11+88+1\right)=8,5\times100=850\)
Cách 2:
\(A=716,58-451,17=265,4\)
\(B=216,72+686,28=903\)
\(C=432,43-411,59+31,26=52,1\)
\(D=93,5+748+8,5=850\)
A = 26,54 x 27 - 26,54 x17
C1 := 716,58 - 451,18
= 265,4
C2: = 26,54 x ( 27 - 17 )
= 26,54 x 10
= 265,4
B = 9,03 x 24 + 9,03 x 76
C1 = 216,72 + 686,28
= 903
C2 = 9,03 x ( 24 + 76 )
= 9,03 x 100
= 903
C = 5,21 x 83 - 79 x 5,21 + 5,21 x 6
C1 = 432,43 - 411,59 + 31,26
= 20,84 + 31,26
= 52,1
C2 = 5,21 x ( 83 - 79 + 6 )
= 5,21 x 10
= 52,1
D = 8,5 x 11 + 88 x 8,5 + 8,5
C1 = 93,5 + 748 + 8,5
= 850
C2 = 8,5 x 11 + 88 x 8,5 + 8,5 x 1
= 8,5 x ( 11 + 88 + 1 )
= 8,5 x 100
= 850
THAM THẢO:
C1:
A = 26,54 × 27 – 26,54 × 17
= 712,8 - 451,18
= 70,62
C2:
= 26, 54 x (27 - 17)
= 26,57 x 10
= 265,7
C1:
B = 9,03 × 24 + 9,03 × 76
= 216,72 + 686,28
= 903
C2:
= 9,03 x ( 24 + 76)
= 9,03 x 100
= 903
C1:
C = 5,21 × 83 – 79 × 5,21 + 5,21 × 6
= 432,43 - 411,59 + 31,26
= 52,1
C2:
= 5,21 x ( 83 - 79 + 6 )
= 5,21 x 10
= 52, 1
C1:
D = 8,5 × 11 + 88 × 8,5 + 8,5
= 93,4 + 748 + 8,5
= 849,9
C2:
= 8,5 x (11 + 88 + 1)
= 8,5 x 100
= 850
