Addition & Subtraction

Key Words

100

Is it a key word for addition or subtraction?

take away

subtraction

200

Is it a key word for addition or subtraction?

in all

addition

300

Is it a key word for addition or subtraction?

fewer

subtraction

400

Is it a key word for addition or subtraction?

how many more

how many fewer

subtraction

500

Is it a key word for addition or subtraction?

sum

addition

Explain your strategy - Addition or subtraction

100

Dylan has 57 apples. Matthew has 32 apples. How many more apples does Dylan have than Matthew?

subtraction (57-32) or adding up (32 + ? = 57)

25

200

Mr. Brenner writes 43 worksheets. Mrs. Mills writes 10 worksheets. How many worksheets do they write in all?

addition

300

What is the sum of 19 and 39?

addition

400

Ms. Ryan has 197 apples. Mr. Oginni has 57 more apples than Ms. Ryan. How many apples does Mr. O have?

Addition

500

Fritz has 197 apples. William has 97 apples. How many more apples does Fritz have than William?

subtraction (197-97 = ) or adding up (97 + ? = 197)

ways to write numbers

100

How many tens and ones?

7 tens

8 ones

78

200

How many tens and ones:

57

5 tens

7 ones

300

How many tens and how many ones in 89?

8 tens

9 ones

400

Solve:

700+7

707

500

What number is this:

4 tens - 3 tens

1 ten or 10

how many?

100

10 tens

100

200

10 less than 87

77

300

20 more than 77

97

400

8 tens

80

500

5 tens 2 ones

52

wild card

100

Solve this problem. 

41 + 59

100

200

Solve: 

49-10

39

300

Is it a keyword for addition or subtraction?

combined

addition

400

Solve this problem:

Dylan has 18 ponies.  Matt has 12.  How many do they have all together?

30

500

Dylan and William collected 58 pokemon cards.  Fritz bought 32 of them.  Mrs. Mills bought 11 of them. How many did Dylan and William have left?  What operation would you use to solve this?

Subtraction