Kerjain ya pakai cara besok di kumpulkan 1.40 - ((-14 + -12)) - (-27 + 18)) =..... 2.25 x 16 : 16 x 81 =.... 3.12 + 7 x -6 - 8 + 36 : 2 - 7 =..... 4.9 1/3 - 7/8

1.40 - ((-14 + -12)) - (-27 + 18))
= 40 - ((-26) - (-9))
= 40 - (-17)
= 40 + 17
= 57

2.25 x 16 : 16 x 81
= 400 ÷ 16 × 81
= 25 × 81
= 2.025

3.12 + 7 x -6 - 8 + 36 : 2 - 7
= 12 + (-42) - 8 + 18 -7
= -30 - 8 + 11
= -38 + 11
= -27

4.9 1/3 - 7/8 + 2 3/24 - 3 5/6
= 28/3 - 7/8 + 51/24 - 23/6
= 224/24 - 21/24 + 51/24 - 92/24
= 162/24
= 6 18/24
= 6 3/4

5.5/8 + 72,5%
= 5/8 + 725/1000
= 625/1000 + 725/1000
= 1.350/1.000
= 1 350/1000
= 1 7/20

6.4 1/2 : 6/3 x 1/3
= 9/2 ÷ 6/3 × 1/3
= 9/2 × 3/6 × 1/3
= 27/36
= 3/4