Addition Strategies

• 1

• 10

• 13

• 100

Tags

CCSS.6.NS.B.3

Which number shows twenty-seven thousand, eight hundred four?

• 27,084

• 27,804

• 27,840

• 27,844

Tags

CCSS.4.NBT.A.2

Which sum is closest to 4,000?

• 2,744 + 1,025

• 837 + 3,412

• 1,888 + 1,932

• 3,412 + 777

Sian rounds 103,502 to the nearest thousand and gets 103,000. Did Sian make a mistake?

• Yes, Sian rounded to the nearest hundred.

• No, the digit in hundreds place is 5, so he rounded correctly.

• Yes, the digit in hundreds place is 5, so he should have rounded to 104,000

• No, the digit in thousands place is less than 5, so he rounded correctly.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Which sum is closest to 7,500?

• 2,845 + 4,369

• 6,420 + 984

• 1,999 + 5,603

• 3,905 + 3,730