a. <1.5/7 + 7/10> × <7/12 – 2.5/6>
b. 3.57 +3/5 ×2.1/4
c. 2.1/3 × 3/5 × 2.1/4
Tolong dong :
Bab Bilangan Pecahan
Matematika SD Kelas VI
a] (1 5/7 + 7/10) x (7/12 – 2 5/6) = (12/7 + 7/10) x (7/12 – 17/6)
= (120/70 + 49/70) x (7/12 – 34/12)
= (169/70) x (-27/12)
= -4.563/840
= – 5 363/840
= -5 121/280
b] 3 5/7 + 3/5 x 2 1/4 = 26/7 + 3/5 x 9/4
= 26/7 + 27/20
= 520/140 + 189/140
= 709/140
= 5 9/140
c] 2 1/3 x 3/5 x 2 1/4 = 7/3 x 3/5 x 9/4
= 7/5 x 9/4 x 3/3
= 63/20
= 3 3/20