MathematicsGrade 2en

➖ Subtraction Within 100

Master subtracting one-digit numbers from two-digit numbers using concrete materials, pictures, and strategies. Learn to count back, decompose tens, and use related addition facts to solve subtraction problems with confidence. **What you'll learn:** - Subtract one-digit numbers from two-digit numbers using concrete and pictorial methods - Apply counting back and decomposing tens strategies - Solve subtraction word problems within 100 - Connect subtraction to related addition facts

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Question 1
What is $34 - 2$ ?
Question 2
Maya has 45 stickers. She gives away 3 stickers. How many does she have left?
Question 3
When we count back by 1s from 56, we say: 56, 55, 54, 53, 52. This shows $56 - 4 = 52$ .
Question 4
Which strategy would help solve $28 - 5$ by decomposing a ten?
Question 5
What is $52 - 6$ ?
Question 6
Tom has 67 toy cars. He loses 4 of them. How many toy cars does he have now?
Question 7
If $25 + 3 = 28$ , then $28 - 3 = 25$ because subtraction is the opposite of addition.
Question 8
What is $41 - 7$ ?
Question 9
Use counting back to solve: $19 - 3$ . What do you say?
Question 10
Emma had 73 crayons. She used 8 crayons for her drawing. How many crayons are left?
Question 11
To find $56 - 9$ , we can think of the related addition fact $56 + 9 = 65$ .
Question 12
What is $80 - 5$ ?
Question 13
Which picture shows $37 - 4$ using base-ten blocks?
Question 14
A store has 92 apples. They sell 6 apples. How many apples are left?
Question 15
When we decompose a ten to subtract, we are changing 1 ten into 10 ones.
Question 16
What is $63 - 8$ ?
Question 17
Kai counted back from 44 to find $44 - 2$ . He said: 44, 43, 42. What is the answer?