1) √400 + 2½
2) 2¼ + 3⅕
1. √400 + 2½
= √20² + 2½
= 20 + 2½
= 20 × 5/2
= 45/2
= 22,5
2. 2¼ + 3⅕
= 9/4 + 3⅕
= 9/4 + 16/5
= 109/20
= 5 9/20
⃢~ Opung~⃠⃫⃟⃤᳗᳐
Penjelasan dengan langkah-langkah:
[tex]\sf \sqrt{400} + 2 \frac{1}{2} = [/tex]
[tex]\sf = \sqrt{ {20}^{2} } + \frac{(2 \times 2) + 1}{2} [/tex]
[tex]\sf = 20 + \frac{5}{2} [/tex]
[tex]\sf = \frac{(20 \times 2) + 5}{2} [/tex]
[tex]\sf = \frac{45}{2} [/tex]
[tex]\sf = 22.5[/tex]
[tex] \\ [/tex]
[tex]\sf 2 \frac{1}{4} + 3\frac{1}{5} = [/tex]
[tex]\sf = \frac{(2 \times 4) + 1}{4} + \frac{(3 \times 5) + 1}{5} [/tex]
[tex]\sf = \frac{9}{4} + \frac{16}{5} [/tex]
[tex]\sf = \frac{9 \times 5}{16 \times 5} + \frac{16 \times 4}{5 \times 4} [/tex]
[tex]\sf = \frac{45}{20} + \frac{64}{20} [/tex]
[tex]\sf = \frac{45 + 64}{20} [/tex]
[tex]\sf = \frac{109}{20} [/tex]
[tex]\sf = 5 \frac{9}{20} [/tex]
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