Adding within 20

What is the sum of 8 and 7?

• 12

• 14

• 15

• 16

What is 3 plus 3?

• 5

• 6

• 7

• 8

What is the relationship between addition and subtraction?

• Subtraction is the inverse operation of addition.

• Addition is the inverse operation of subtraction.

• Addition and subtraction are unrelated operations.

• Subtraction is a type of addition.

What is the sum of 9 and 5?

• 12

• 13

• 14

• 15

What is the commutative property of addition?

• The commutative property states that changing the order of the addends does not change the sum (e.g., a + b = b + a).

• The commutative property states that the sum of two numbers is always greater than either number.

• The commutative property states that the sum of two numbers is equal to their product.

• The commutative property states that the sum of a number and zero is the number itself.

What is a word problem in mathematics?

• A mathematical problem expressed in words, requiring interpretation and problem-solving skills.

• A problem that can be solved using only numerical calculations.

• A type of problem that has no solution.

• A problem that is only found in geometry.

How can you represent the equation 8 + 7 = 15 visually?

• You can use objects, drawings, or a number line to show the addition.

• You can write the equation in words only.

• You can use only numbers without any visual aids.

• You can represent it using only verbal explanations.

What is 5 plus 10?

• 12

• 13

• 15

• 17

What is the maximum sum of two numbers that is less than or equal to 20?

• 15

• 18

• 20

• 25

What is the associative property of addition?

• The associative property states that the way in which numbers are grouped in addition does not change the sum (e.g., (a + b) + c = a + (b + c)).

• The associative property states that the order of numbers in addition does not affect the sum (e.g., a + b = b + a).

• The associative property states that adding zero to a number does not change the number (e.g., a + 0 = a).

• The associative property states that the sum of two numbers is always greater than either number.