Adding and Subtracting Word Problems Within 20

What are the main topics covered in today's lesson?

• Geometry and Algebra

• Adding and Subtracting

• Fractions and Decimals

• Multiplication and Division

If you have 15 pink fish and 7 green fish, how many fish do you have in total?

• 23

• 22

• 21

• 20

What is the sum of 15 and 7?

• 21

• 22

• 23

• 24

What is the first step in the alternative method for adding 15 and 7?

• Subtract 7 from 15

• Add 5 and 7

• Multiply 15 by 7

• Add 1 and 1

What do you do with the 1 in the alternative addition method?

• Ignore it

• Add it to the next column

• Multiply it

• Subtract it

How many frogs did Rachel start with in the subtraction problem?

• 15

• 13

• 12

• 10

How many frogs jumped off in Rachel's subtraction problem?

• 6

• 5

• 4

• 3

What is the result of 13 minus 5?

• 8

• 7

• 6

• 9

What do you need to do if you can't subtract a larger number from a smaller one in a column?

• Add the numbers

• Borrow from the next column

• Ignore the problem

• Multiply the numbers

What is the final number of frogs left after subtraction?

• 9

• 8

• 7

• 6