Page 82 - NUMINO Challenge_K2
P. 82
Problem solving
1 Will all of the children be able to ride the rollercoaster? If they
cannot, write a subtraction expression to show why.
Tip
Compare the number
of seats to the
number of children.
2 Look at the following and draw a if the given problem can
be solved with an addition or subtraction expression.
Harriet solved 7 math problems in the morning
and completed 2 science problems at night.
How many problems could Harriet not solve?
How many problems did she solve in one day?
How many more problems did she solve in the morning
than at night?
How many math problems did she solve in one day?
How many math problems were there in all?
Tip
Find the questions
that cannot be
answered, and mark
an .
79Operations
1 Will all of the children be able to ride the rollercoaster? If they
cannot, write a subtraction expression to show why.
Tip
Compare the number
of seats to the
number of children.
2 Look at the following and draw a if the given problem can
be solved with an addition or subtraction expression.
Harriet solved 7 math problems in the morning
and completed 2 science problems at night.
How many problems could Harriet not solve?
How many problems did she solve in one day?
How many more problems did she solve in the morning
than at night?
How many math problems did she solve in one day?
How many math problems were there in all?
Tip
Find the questions
that cannot be
answered, and mark
an .
79Operations
