Page 88 - NUMINO Challenge_L2
P. 88
Problem solving
Key Point
1 Choose three of the given numbers to write various
addition or subtraction expressions. Note that
number expressions with the same numbers and
operations are considered the same.
Example
Addition Expression
1 4
9
35
Addition Expression 5+9=14 ( )
9 14 is not a given
5 7 19 number.
16 12
17
Subtraction Expression 13-8=5 and
13-5=8 are
24 7 number expressions
8 with the same
5 numbers, so they
11 13 are considered the
same.
12
85Operations
Key Point
1 Choose three of the given numbers to write various
addition or subtraction expressions. Note that
number expressions with the same numbers and
operations are considered the same.
Example
Addition Expression
1 4
9
35
Addition Expression 5+9=14 ( )
9 14 is not a given
5 7 19 number.
16 12
17
Subtraction Expression 13-8=5 and
13-5=8 are
24 7 number expressions
8 with the same
5 numbers, so they
11 13 are considered the
same.
12
85Operations
