Page 154 - NUMINO Challenge_K2
P. 154
p.76 Making Expressions from Pictures Problem solving p.77
Type Study Gina went to the zoo with her friends. Look at the pictures to 1 Find the picture ( , , , ) that fits with each expression,
write the expressions.
and complete the expressions.
How many
5 3 2people do not
have a bag?
-=
5+2=7
How many How many
people are seals are
looking at the there?
seals?
6 +2 =8
How many 3 64 - 1 =
fish are left ( ) 4 +2 = ()
in the pond?
8 54 + 4 =
8-3=5 ( ) 9 -4 = ()
Two Definitions of Addition - Merging & Adding
Definition`of Example Model Time Tip
Addition Simultaneous In picture B, the child
took a number of
3+4=7 Merge Putting`3`and`4`together lollipops from a given
number of lollipops.
Add Adding`4`to`3 Difference`in`time
77Operations
76 NUMINO Challenge K2
Use stories to explain the situations so that students can grasp the meaning of addition
and subtraction. It is important to use a variety of vocabulary for addition and subtraction.
p.78 Making Expressions from Word Problems Problem solving p.79
Type Study Match the word problem to the appropriate expression. 1 Will all of the children be able to ride the rollercoaster? If they
cannot, write a subtraction expression to show why.
How many 3+3 No, they won’t. Tip
more strawberries 4-3 10 – 8 = 2
4+3 Compare the number
are there than 4-2 of seats to the
candies? number of children.
If 3 more apples 2 Look at the following and draw a if the given problem can
are placed on the
table, how many apples be solved with an addition or subtraction expression.
will there be in all?
Harriet solved 7 math problems in the morning
If I eat 3 and completed 2 science problems at night.
strawberries,
how many will How many problems could Harriet not solve?
How many problems did she solve in one day?
be left? How many more problems did she solve in the morning
than at night?
How many How many math problems did she solve in one day?
fruit are there How many math problems were there in all?
on the table?
Tip
Two Definitions of Subtraction - Comparing & Subtracting Find the questions
that cannot be
Definition`of Example Model Time answered, and mark
Subtraction Simultaneous an .
Find`the`difference Difference`in`time
5-2=3 Compare of`5`and 2 79Operations
Subtract Take`away`2`from`5
78 NUMINO Challenge K2
WRahtehnercothmapnaprinagyin3gdiaffteterenntitoonbjteoctsh,emreassuultr,egeuaicdhe otbhjeecsttuwditehnatsfotuortphaoybajetctetnthtiaotnctaon tahcet
amseathsotdanodfainrdd,icaantdincgoaudndtitihoennourmsubbetrroacf teioanchsiotubajeticotntsoicnotomnpuamrebienrdsiraencdtlys.ymbols and help
them distinguish its meaning.
25Answer Key
Type Study Gina went to the zoo with her friends. Look at the pictures to 1 Find the picture ( , , , ) that fits with each expression,
write the expressions.
and complete the expressions.
How many
5 3 2people do not
have a bag?
-=
5+2=7
How many How many
people are seals are
looking at the there?
seals?
6 +2 =8
How many 3 64 - 1 =
fish are left ( ) 4 +2 = ()
in the pond?
8 54 + 4 =
8-3=5 ( ) 9 -4 = ()
Two Definitions of Addition - Merging & Adding
Definition`of Example Model Time Tip
Addition Simultaneous In picture B, the child
took a number of
3+4=7 Merge Putting`3`and`4`together lollipops from a given
number of lollipops.
Add Adding`4`to`3 Difference`in`time
77Operations
76 NUMINO Challenge K2
Use stories to explain the situations so that students can grasp the meaning of addition
and subtraction. It is important to use a variety of vocabulary for addition and subtraction.
p.78 Making Expressions from Word Problems Problem solving p.79
Type Study Match the word problem to the appropriate expression. 1 Will all of the children be able to ride the rollercoaster? If they
cannot, write a subtraction expression to show why.
How many 3+3 No, they won’t. Tip
more strawberries 4-3 10 – 8 = 2
4+3 Compare the number
are there than 4-2 of seats to the
candies? number of children.
If 3 more apples 2 Look at the following and draw a if the given problem can
are placed on the
table, how many apples be solved with an addition or subtraction expression.
will there be in all?
Harriet solved 7 math problems in the morning
If I eat 3 and completed 2 science problems at night.
strawberries,
how many will How many problems could Harriet not solve?
How many problems did she solve in one day?
be left? How many more problems did she solve in the morning
than at night?
How many How many math problems did she solve in one day?
fruit are there How many math problems were there in all?
on the table?
Tip
Two Definitions of Subtraction - Comparing & Subtracting Find the questions
that cannot be
Definition`of Example Model Time answered, and mark
Subtraction Simultaneous an .
Find`the`difference Difference`in`time
5-2=3 Compare of`5`and 2 79Operations
Subtract Take`away`2`from`5
78 NUMINO Challenge K2
WRahtehnercothmapnaprinagyin3gdiaffteterenntitoonbjteoctsh,emreassuultr,egeuaicdhe otbhjeecsttuwditehnatsfotuortphaoybajetctetnthtiaotnctaon tahcet
amseathsotdanodfainrdd,icaantdincgoaudndtitihoennourmsubbetrroacf teioanchsiotubajeticotntsoicnotomnpuamrebienrdsiraencdtlys.ymbols and help
them distinguish its meaning.
25Answer Key
