subtraction within 1000 with regrouping

There are 27 crayons and 41 rulers in the drawer. How many crayons and rulers in the drawer?

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81-64=

• 17

• 15

• 23

• 23

• 33

• 43

There are 65 geese on a pond. 28 of the geese flew away. How many geese are left on the pond?

• 33

• 37

• 43

• 47

• 992

• 789

• 982

30+18=

• 48

• 40

• 38

16-8=

• 9

• 8

• 7

• 0

• 23

• 27

• 34

25+34=

• 95

• 59

• 69