Penjelasan dengan langkah-langkah:
1. ( 1/4 x 25 = 0,25 ), ( 16/10 x 10 = 0,16 )
= 0,25 + 0,16 + 3,5 = 3,91
2. ( 3 4/5 = 19/5 x 2 = 38/10 = 3,8 )
= 6,25 + 3,8 = 10,05
3. 80 - 64,5 = 16,5
4. ( 3 3/6 = 21/6 = 7/2 x 5 = 35/10 = 3,5 ), ( 45% = 45/100 = 0, 45 )
= 7,85 - 3,5 - 0,45 = 3,98
5. ( 2 3/4 = 11/4 x 25 = 275% )
= 275 % - 75% = 200%
6. 5/6 x 4/5 x 3/8 = 60/240 = 1/4
7. ( 4 3/6 = 27/6 = 9/2 ), 3 ( 3/1 )
= 9/2 x 1/3 = 9/6 = 3/2 = 1 1/2
8. ( 8,8 = 88/10 = 44/5 ), ( 1 2/8 = 10/8 = 5/4 )
= 44/5 x 5/4 = 220/20 = 11
9. 50% + 45% = 95%
10. • ( 3 1/2 + 5/10 = 7/2 + 5/10 = 35+5/10 =
40/10 = 4 )
• ( 2 1/2 - 2/4 = 5/2 - 2/4 = 10-2/4 = 8/4 = 2 )
= 4 x 2 = 8
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Penjelasan dengan langkah-langkah:
1. ( 1/4 x 25 = 0,25 ), ( 16/10 x 10 = 0,16 )
= 0,25 + 0,16 + 3,5 = 3,91
2. ( 3 4/5 = 19/5 x 2 = 38/10 = 3,8 )
= 6,25 + 3,8 = 10,05
3. 80 - 64,5 = 16,5
4. ( 3 3/6 = 21/6 = 7/2 x 5 = 35/10 = 3,5 ), ( 45% = 45/100 = 0, 45 )
= 7,85 - 3,5 - 0,45 = 3,98
5. ( 2 3/4 = 11/4 x 25 = 275% )
= 275 % - 75% = 200%
6. 5/6 x 4/5 x 3/8 = 60/240 = 1/4
7. ( 4 3/6 = 27/6 = 9/2 ), 3 ( 3/1 )
= 9/2 x 1/3 = 9/6 = 3/2 = 1 1/2
8. ( 8,8 = 88/10 = 44/5 ), ( 1 2/8 = 10/8 = 5/4 )
= 44/5 x 5/4 = 220/20 = 11
9. 50% + 45% = 95%
10. • ( 3 1/2 + 5/10 = 7/2 + 5/10 = 35+5/10 =
40/10 = 4 )
• ( 2 1/2 - 2/4 = 5/2 - 2/4 = 10-2/4 = 8/4 = 2 )
= 4 x 2 = 8