Page 43 - NUMINO Challenge_M2
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1. Solving for a Number
Solving Expressions with
A problem can be solved by making an expression by using numbers and
symbols. Make the expression by using as the value that needs to be found.
A student received 3 pencils What needs to Expression
from the teacher, which be found? using
made a total of 4 pencils.
How many pencils did he Number of pencils +3=4
he had originally. =1
have originally?
Multiplication Table when is used in a
A multiplication table can be used to solve for
multiplication expression.
5 =30 56789 =6
5 25 30 35 40 45
6 30 36 42 48 54
7 35 42 49 56 63
8 40 48 56 64 72
9 45 54 63 72 81
EExxpplloorree Stephanie has 5 chocolates less than Erin, and Erin has 9 more
than John. If Stephanie has 10 chocolates, how many
chocolates does John have?
If is the number of chocolates Erin has,
-5=10 =15 chocolates
If is the number of chocolates John has,
+9=15 =6 chocolates
40 NUMINO Challenge M2
Solving Expressions with
A problem can be solved by making an expression by using numbers and
symbols. Make the expression by using as the value that needs to be found.
A student received 3 pencils What needs to Expression
from the teacher, which be found? using
made a total of 4 pencils.
How many pencils did he Number of pencils +3=4
he had originally. =1
have originally?
Multiplication Table when is used in a
A multiplication table can be used to solve for
multiplication expression.
5 =30 56789 =6
5 25 30 35 40 45
6 30 36 42 48 54
7 35 42 49 56 63
8 40 48 56 64 72
9 45 54 63 72 81
EExxpplloorree Stephanie has 5 chocolates less than Erin, and Erin has 9 more
than John. If Stephanie has 10 chocolates, how many
chocolates does John have?
If is the number of chocolates Erin has,
-5=10 =15 chocolates
If is the number of chocolates John has,
+9=15 =6 chocolates
40 NUMINO Challenge M2
