8


Subtraction


We are learning to: Make number sentences for number stories involving subtraction within 99.


Solve two-step word puzzles involving addition and subtraction. Day One Look at the example below.


Taylor bought a packet of 25 stamps. She used 10 stamps to post cards to her cousins. How many stamps does she have left?


Circle the numbers and keywords: 25 stamps, used 10, how many does she have left?


Link with operation needed (+ or −): Subtract (−). Use a strategy: Draw a bar model. Estimate and calculate:


25 stamps


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Used 10


Answer: 15


Summarise how you got your answer: I drew a bar and split it into 25 parts. I crossed out 10 stamps and saw that there were 15 left.


Try these. 1


2 3


There were 27 slices of bread in a packet. Ann Marie used 14 slices to make toast. How many slices were left?


There were 36 chicken nuggets in the freezer. Grandad cooked 6 for Leah and 6 for Ben. How many were left in the freezer?


48 children were at a birthday party. 15 children went home early. How many children stayed?


36 Strand: Number Strand Unit: Operations − subtraction


Answer: Marks:


Answer: Marks:


Answer: Marks:


Today’s Marks:


/1


/2


/1 /4


Week 8


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