1.3/4×0,6:20% 2. 2 1/4:0,4×1/5 3.3/5×35%÷0,8+ 2 1/2 Mohon Di jawab yaa bsk dikumpulin

W kecilkan pecahannya biar gak ribet
1) 3/4x0,6÷20%
= 3/4 x 6/10 ÷ 20/100
= 3/4 x 3/5 ÷ 1/5
= 9/20 x 5/1
= 45/20 = 2 5/20 = 2 1/4.

2) 2 1/4÷0,4x1/5
= 9/4 ÷ 4/10 x 1/5
= 9/4 ÷ 2/5 x 1/5
= 9/4 x 5/2 x 1/5
= 45/8 x 1/5
= 45/40 = 1 5/40 = 1 1/8.

3)3/5x35%÷0,8+2 1/2
= 3/5 x 35/100 ÷ 8/10 + 5/2
= 3/5 x 7/20 ÷ 2/5 + 5/2
= 21/100 x 5/2 + 5/2
= 105/200 + 5/2
= 21/40 + 5/2
= 21/40 + 100/40
= 121/40 = 3 1/40.



Maaf kalo salah & gk jls