Page 144 - NUMINO Challenge_M2
P. 144
Type Study The sum of the two numbers above is the number below.
23 2+3 54 5+4
5 9
The sum of the two numbers below is the number above.
3 2+1
21
In A 1 , A+1=2, so A=1. In B , 3+4=B, so B=7.
2 34
Problem solving
1 The following picture shows the hands connected on the ladder pattern.
431 2
54426
11 5
When looking at the relationship between the numbers connected, the number
in the middle is the sum of the numbers on the hands.
The missing number is 2+5=7.
2 When looking for the pattern of numbers in the number chart, the expression
on the right can be written. The following shows the numbers that follow the
pattern.
ABC 123
6
D
345
E 12
A=B-1 789
C=B+1 24
D=A+B+C
E=D-B 15 16 17
48
31 32 33
7Answer Key
23 2+3 54 5+4
5 9
The sum of the two numbers below is the number above.
3 2+1
21
In A 1 , A+1=2, so A=1. In B , 3+4=B, so B=7.
2 34
Problem solving
1 The following picture shows the hands connected on the ladder pattern.
431 2
54426
11 5
When looking at the relationship between the numbers connected, the number
in the middle is the sum of the numbers on the hands.
The missing number is 2+5=7.
2 When looking for the pattern of numbers in the number chart, the expression
on the right can be written. The following shows the numbers that follow the
pattern.
ABC 123
6
D
345
E 12
A=B-1 789
C=B+1 24
D=A+B+C
E=D-B 15 16 17
48
31 32 33
7Answer Key
