It is 15.7 because you are rounding to the first digit which is first digit after the decimal point. The number after it is less than 5 so you won't round up.
To round 15.70796327 to one decimal point, identify the digit in the tenths place, which is '7'. Since the next digit (in the hundredths place) is '0', we keep it the same, resulting in 15.7. Thus, the rounded number is 15.7.
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Soal:1 + 3 + 7 + 8 + 10 + 100 × 999 ÷ 2Langkah:1. Hitung perkalian dan pembagian terlebih dahulu: 100 × 999 = 99,900 99,900 ÷ 2 = 49,9502. Hitung penjumlahan sisanya: 1 + 3 + 7 + 8 + 10 = 293. Tambahkan semua: 29 + 49,950 = 49,979Jawaban akhir:49,979