Page 99 - NUMINO Challenge_M2
P. 99
Creative Thinking
Change five number cards in the following addition problem to 0
so that the sum is 100.
11 Key Point
22
33 The digits in the ones
44 place must be added
66 so that the sum has a
88 0 in the ones place.
Find what number
needs to be subtracted
from the sum. Think
about the hundreds
place and tens place in
the sum as the 2-digit
number 10.
The number cards from 1 to 9 and the + and - signs were used
to make the following expression. What is the greatest result that
can be made if three number cards were taken out to make three
2-digit numbers and the remaining cards were left in the same
order?
3 9 7+4 2 8-1 6 5
Key Point
Make the numbers
added the greatest
possible and the
numbers subtracted
the smallest possible.
96 NUMINO Challenge M2
Change five number cards in the following addition problem to 0
so that the sum is 100.
11 Key Point
22
33 The digits in the ones
44 place must be added
66 so that the sum has a
88 0 in the ones place.
Find what number
needs to be subtracted
from the sum. Think
about the hundreds
place and tens place in
the sum as the 2-digit
number 10.
The number cards from 1 to 9 and the + and - signs were used
to make the following expression. What is the greatest result that
can be made if three number cards were taken out to make three
2-digit numbers and the remaining cards were left in the same
order?
3 9 7+4 2 8-1 6 5
Key Point
Make the numbers
added the greatest
possible and the
numbers subtracted
the smallest possible.
96 NUMINO Challenge M2
