Question

1) 1/6+1/2= 2) 1/3+2/21= 3) 16/25+3/5= 4) 9/10+27/80= Помогите пожалуйста. я 4 классник и я не понял это на уроке :)

Answer 1

1) 1/6+1/2=1/6+3/6=4/6=2/3 2) 1/3+2/21=7/21+2/21=9/21=3/7 3) 16/25+3/5=16/25+15/25=21/25 4) 9/10+27/80=72/80+27/80=99/80= 1 19/80

Answer 2

1) To solve the equation 1/6 + 1/2, we need to find a common denominator. The common denominator for 6 and 2 is 6. So, we can rewrite the equation as (1/6) + (3/6). Adding the numerators, we get 4/6. Simplifying the fraction, we divide both the numerator and denominator by their greatest common divisor, which is 2. Therefore, the answer is 2/3.

2) To solve the equation 1/3 + 2/21, we need to find a common denominator. The common denominator for 3 and 21 is 21. So, we can rewrite the equation as (7/21) + (2/21). Adding the numerators, we get 9/21. Simplifying the fraction, we divide both the numerator and denominator by their greatest common divisor, which is 3. Therefore, the answer is 3/7.

3) To solve the equation 16/25 + 3/5, we need to find a common denominator. The common denominator for 25 and 5 is 25. So, we can rewrite the equation as (16/25) + (15/25). Adding the numerators, we get 31/25. Since the numerator is greater than the denominator, we can rewrite the fraction as a mixed number. Dividing 31 by 25, we get 1 with a remainder of 6. Therefore, the answer is 1 6/25.

4) To solve the equation 9/10 + 27/80, we need to find a common denominator. The common denominator for 10 and 80 is 80. So, we can rewrite the equation as (72/80) + (27/80). Adding the numerators, we get 99/80. Since the numerator is greater than the denominator, we can rewrite the fraction as a mixed number. Dividing 99 by 80, we get 1 with a remainder of 19. Therefore, the answer is 1 19/80.

I hope this helps! Let me know if you have any further questions.