Page 29 - NUMINO Challenge_D2
P. 29
Type 3-1 Representing as a Fraction Unit
7
The fraction 10 is expressed as the sum of unit fractions by using the
factors of the denominator.
7
Find the factors of the denominator, which is 10, from 10 .
1, 2, 5, 10
Express the numerator, which is 7, as the sum of the factors of the
denominator. 2 5 7
72511
Therefore, 10 10 10 5 2
7
Express the fraction 9 as the sum of three different unit fractions by
using the method above.
1 The fraction 7 cannot express the numerator, 7, as the sum of the factors
9
of the denominator, which are 1, 3, and 9. The following shows equivalent
fractions of 7 . Fill in the with correct numbers.
9
7 21
9 18
2 Among the fractions found in 1 , which fraction can express the numerator
as the sum of the factors of the denominator?
3 Use the fraction found in 2 to express 7 as the sum of three different unit
9
fractions.
26 NUMINO Challenge D2
7
The fraction 10 is expressed as the sum of unit fractions by using the
factors of the denominator.
7
Find the factors of the denominator, which is 10, from 10 .
1, 2, 5, 10
Express the numerator, which is 7, as the sum of the factors of the
denominator. 2 5 7
72511
Therefore, 10 10 10 5 2
7
Express the fraction 9 as the sum of three different unit fractions by
using the method above.
1 The fraction 7 cannot express the numerator, 7, as the sum of the factors
9
of the denominator, which are 1, 3, and 9. The following shows equivalent
fractions of 7 . Fill in the with correct numbers.
9
7 21
9 18
2 Among the fractions found in 1 , which fraction can express the numerator
as the sum of the factors of the denominator?
3 Use the fraction found in 2 to express 7 as the sum of three different unit
9
fractions.
26 NUMINO Challenge D2
