Page 145 - NUMINO Challenge_B2
P. 145
Answer
Key
Type 3-1 Making Fractions with Number Cards p.26~p.27 Type 3-2 Sums of Denominators and Numerators p.28~p.29
1 Fractions with a denominator of 3 : 1 , 4 , 6 , 8 1 5 10 15 20 25 30
3 3 3 3 8 16 24 32 40 48
Fraction smaller than 1 : 1 Answers will vary.
2 3
2 1 , 1 , 1 , 3 22 3 4 5 6
4 6 8 8
10 15 20 25 30
3 There are 5 fractions that are smaller than 1 : 16 24 32 40 48
2
26 39 52 65 78
1 , 1 , 1 , 1 , 3
3 4 6 8 8
4 5 , 5 , 6 3 260 13 20
6 7 7
4 5 20 100
8 20 160
Problem solving
Problem solving
1 2 , 2 , 3 , 2 , 3 , and 7 are smaller than 1.
3 7 7 9 9 9
1 The fractions which have denominators and
12 2 2 , 2
33 6 7 9 numerators that add up to 20 are:
33 33 123456789
97 99 19 18 17 16 15 14 13 12 11
Therefore, there are 6 fractions that are smaller
37 than 1 .
99 2
Therefore, the fractions that are smaller than 1 2 1 1 , 1 , 1 , 1 , 1 , 1
3 4 5 6 7 8 9 10
are: 2 and 2 . 22
7 9 89
2 The fractions that are equivalent to 1 are
5
fractions in which the denominators are 5 times Creative Thinking p.30~p.31
of numerators.
1234547 1 When two fractions have the same numerator,
5 10 15 20 25 30 35
the fraction with the smaller denominator is
Among the fractions above, there are 2 fractions, greater.
4 and 2 , that are equivalent to 1 . 88
20 10 5 9 11
When two fractions have the same difference
between the denominator and numerator, the
fraction with the greater denominator and
numerator is greater.
8 2 11 8
11 5 12 9
Therefore, 11 8 8 2 .
12 9 11 5
NUMINO Challenge B2
Key
Type 3-1 Making Fractions with Number Cards p.26~p.27 Type 3-2 Sums of Denominators and Numerators p.28~p.29
1 Fractions with a denominator of 3 : 1 , 4 , 6 , 8 1 5 10 15 20 25 30
3 3 3 3 8 16 24 32 40 48
Fraction smaller than 1 : 1 Answers will vary.
2 3
2 1 , 1 , 1 , 3 22 3 4 5 6
4 6 8 8
10 15 20 25 30
3 There are 5 fractions that are smaller than 1 : 16 24 32 40 48
2
26 39 52 65 78
1 , 1 , 1 , 1 , 3
3 4 6 8 8
4 5 , 5 , 6 3 260 13 20
6 7 7
4 5 20 100
8 20 160
Problem solving
Problem solving
1 2 , 2 , 3 , 2 , 3 , and 7 are smaller than 1.
3 7 7 9 9 9
1 The fractions which have denominators and
12 2 2 , 2
33 6 7 9 numerators that add up to 20 are:
33 33 123456789
97 99 19 18 17 16 15 14 13 12 11
Therefore, there are 6 fractions that are smaller
37 than 1 .
99 2
Therefore, the fractions that are smaller than 1 2 1 1 , 1 , 1 , 1 , 1 , 1
3 4 5 6 7 8 9 10
are: 2 and 2 . 22
7 9 89
2 The fractions that are equivalent to 1 are
5
fractions in which the denominators are 5 times Creative Thinking p.30~p.31
of numerators.
1234547 1 When two fractions have the same numerator,
5 10 15 20 25 30 35
the fraction with the smaller denominator is
Among the fractions above, there are 2 fractions, greater.
4 and 2 , that are equivalent to 1 . 88
20 10 5 9 11
When two fractions have the same difference
between the denominator and numerator, the
fraction with the greater denominator and
numerator is greater.
8 2 11 8
11 5 12 9
Therefore, 11 8 8 2 .
12 9 11 5
NUMINO Challenge B2
