1/4 + 5 = 5.25
/4 + 5/1 = (1 x 1 + 5 x 4) / (4 x 1) = 21/4 = 5.25.
1/3 + 2 = 2.3333... (2 1/3)
1/3 + 2/1 = (1 x 1 + 2 x 3) / (3 x 1) = 7/3 = 2.3333... (2 1/3)
1/2 + 3 = 3.5
1/2 + 3/1 = (1 x 1 + 3 x 2) / (2 x 1) = 7/2 = 3.5
1. ¼ + 5 =
= ¼ + 5/1
= ¼ + ../5
= ¼ + (4 ÷ 1 × 5)/4
= ¼ + 20/4
= (20 + 1)/4
= 21/4
= 5 ¼
cara cepat :
5 + ¼
2. ⅓ + 2
= ⅓ + 2/1
= ⅓ + ../3
= ⅓ + (3 ÷ 1 × 2)/3
= ⅓ + 6/3
= 7/3
= 2 ⅓
2 + ⅓
3. ½ + 3
= ½ + 3/1
= ½ + (2 ÷ 1 × 3)/2
= ½ + 6/2
= 7/2
= 3 ½
3 + ½
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1/4 + 5 = 5.25
/4 + 5/1 = (1 x 1 + 5 x 4) / (4 x 1) = 21/4 = 5.25.
1/3 + 2 = 2.3333... (2 1/3)
1/3 + 2/1 = (1 x 1 + 2 x 3) / (3 x 1) = 7/3 = 2.3333... (2 1/3)
1/2 + 3 = 3.5
1/2 + 3/1 = (1 x 1 + 3 x 2) / (2 x 1) = 7/2 = 3.5
1. ¼ + 5 =
= ¼ + 5/1
= ¼ + ../5
= ¼ + (4 ÷ 1 × 5)/4
= ¼ + 20/4
= (20 + 1)/4
= 21/4
= 5 ¼
cara cepat :
5 + ¼
= 5 ¼
2. ⅓ + 2
= ⅓ + 2/1
= ⅓ + ../3
= ⅓ + (3 ÷ 1 × 2)/3
= ⅓ + 6/3
= 7/3
= 2 ⅓
cara cepat :
2 + ⅓
= 2 ⅓
3. ½ + 3
= ½ + 3/1
= ½ + (2 ÷ 1 × 3)/2
= ½ + 6/2
= 7/2
= 3 ½
cara cepat :
3 + ½
= 3 ½