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Adding and Subtracting Within 20

English 19 Public

Students practice adding and subtracting within 20 while explaining their thinking.

Study Slideshow

#Math #maths #Mathematics #Subtraction #adding #subtracting #Addition #1 to 20

three+three=

six

15

ten-four=

six

15

four+five=

nine

15

two+two=

four

15

thirteen-five=

eight

15

fifteen-two=

therteen

15

twenty-ten=

ten

15

seven+three=

ten

15

seven+seven=

fourteen

15

sixteen-eight=

eight

15

eight-one=

seven

15

ten-six=

four

15

nine-seven=

two

15

six-two=

four

15

nine+nine=

eighteen

15

thirteen-eight=

five

15

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