Understanding Basic Addition and Counting (4.NBT.4)

How many yellow ones blocks are shown on the left side of the screen?

• 8

• 9

• 10

• 11

What number is represented by one stack of blue blocks and four single blue blocks?

• 10

• 14

• 41

• 4

What is the sum when the nine yellow ones is added to the blue stack of ten and four blue ones?

• 21

• 22

• 23

• 24

What are you doing when you "carry" the number?

• regrouping into the next place value

• getting rid of the number

• adding the number to the next line of numbers

What is the sum of the all the number blocks?

• 124

• 14

• 114

• 141

When adding 63 and 51 using the standard addition algorithm, what is the sum of the digits in the tens place?

• 10

• 11

• 12

• 13

What does the 2 above the 7 in the tens place stand for?

• 2 ones being regrouped

• 2 tens being regrouped

• 2 hundreds being regrouped

• 27