Subtracting One and Two Digit Numbers
Regroup 1 ten for ten ones
Brain Teasers
100

32-6=

26

100

Do I need to regroup for 49-3?

No

100

Malcolm has 38 seeds.  Juan has 4 fewer seeds than Malcolm.  Juan gives 8 seeds to his friend.  How many seeds does Juan have now?

Juan has 26 seeds

200

56-7=

49

200

Do I need to regroup for 56-7?

Yes

200

Sammie has 9 fewer rings than Emilio. Sammie has 7 more rings than Sara.  Emilio has 34 rings. How many rings does Sammie have?

Sammie has 25 rings

300

77-9=

68

300

Do I need to regroup for 96-6?

No

300

Hannah has 46 cards. James has 65 cards. How many more cards does James have than Hannah?

James has 19 more

400

98-9=

89

400

Do I need to regroup 87-8?

Yes
400

Anna has 7 fewer hair clips than Eve.
Anna has 6 more hair clips than Grace.
Eve has 28 hair clips. How many hair clips does Anna have?

Anna has 21 hair clips

500

There are 25 bikes at a bike store. The store owner sells 7 bikes. How many bikes are left?

18 bikes

500

There are  21 snails in a garden. 6 snails leave.  How many snails are still in the garden?

15 snails

500

Finn has 33 comic books.
Eli has 5 fewer comic books than Finn.
Eli gives 6 comic books to his brother.
How many comic books does Eli have now?

Eli has 22 comic books