1. 4 × . . . = 16 × 1/2 2. 2 × . . . = 36 ÷ 3 3. (1/2 × . . . ) -25 = 25 × 17 4. (10 : 1/2) × . . . = 120 5. (1/5 × . . .) - 10 = 5×4 -Kerjakan dengan caranya

1. 4 x .2. = 16 x 1/2 (16 x 1/2 = 8 dibagi 2)
2. 2 x .6. = 36 : 3 (36 : 3 = 12 dibagi 2)
3. (1/2 x .900..) - 25 = 25x17 (25 x 17 = 425 + 25 = 450 : 1/2 = 900)
4. (10:1/2) x ..24... = 120 (120 x 1/2 x 10 = 120 : 5 = 24)
5. 1/5 x ..150.) - 10 = 5 x 4 (5 x 4 = 20 + 10 = 30 : 1/5 = 150)

untuk pembuktian silahkan dibalik

1
4 x ... = 16 x 1/2
4 x ... = 8
... = 8 : 4
... = 2

2
2 x ... = 36 : 3
2 x ... = 12
... = 12 : 2
... = 6

3
(1/2 x ...) - 25 = 25 x 17
(1/2 x ...) -25 = 425
... = 425 + 25 : 1/2
... = 450 x 2
... = 900

4
(10 : 1/2) x ... = 120
(10 x 2/1) x ... = 120
20 x ... = 120
... = 120 : 20
... = 6

5
(1/5 x ...) - 10 = 5 x 4
(1/5 x ...) - 10 = 20
... = 20 + 10 : 1/5
... = 30 x 5
... = 150

untuk pembuktian silakan dicoba