分数 問題
分数の足し算、引き算、掛け算、割り算を、約分された答えとともに。
分数の足し算、引き算、掛け算、割り算、分数の約分、小数・分数・パーセントの変換に関する問題をカバーしています。帯分数と仮分数も含みます。
はじめる： 分数
分数の例題
以下の例題は現在、英語のみで提供されています。
1. 5/10 + 1/4 = ?+
答え: 3/4
Step 1: Find a common denominator: 10 and 4 both divide evenly into 20. Step 2: Rewrite each fraction: 5/10 = 10/20, and 1/4 = 5/20. Step 3: Add the numerators: 15/20. Step 4: Simplify: 3/4.
2. 2/5 + 3/8 = ?+
答え: 31/40
Step 1: Find a common denominator: 5 and 8 both divide evenly into 40. Step 2: Rewrite each fraction: 2/5 = 16/40, and 3/8 = 15/40. Step 3: Add the numerators: 31/40. Step 4: Simplify: 31/40.
3. 1/8 - 7/10 = ?+
答え: -23/40
Step 1: Find a common denominator: 8 and 10 both divide evenly into 40. Step 2: Rewrite each fraction: 1/8 = 5/40, and 7/10 = 28/40. Step 3: Subtract the numerators: -23/40. Step 4: Simplify: -23/40.
4. 3/9 + 4/5 = ?+
答え: 17/15
Step 1: Find a common denominator: 9 and 5 both divide evenly into 45. Step 2: Rewrite each fraction: 3/9 = 15/45, and 4/5 = 36/45. Step 3: Add the numerators: 51/45. Step 4: Simplify: 17/15.
5. 5/10 ÷ 1/3 = ?+
答え: 3/2
Step 1: Flip the second fraction and multiply: 5/10 × 3/1. Step 2: Multiply numerators and denominators: (5 × 3) / (10 × 1) = 15/10. Step 3: Simplify by dividing both by 5: 3/2.
6. 4/5 + 2/3 = ?+
答え: 22/15
Step 1: Find a common denominator: 5 and 3 both divide evenly into 15. Step 2: Rewrite each fraction: 4/5 = 12/15, and 2/3 = 10/15. Step 3: Add the numerators: 22/15. Step 4: Simplify: 22/15.