Adding and Subtracting Decimal Numbers

During a science experiment Mary found the mass of two rocks to be 41.4 grams and 74.3 grams. What is the total mass of these two rocks?

• 115.7

• 114

• 32.9

Tags

CCSS.6.NS.B.3

Ned and Sarah were running a relay race. The total distance of the race was 22.01km. If Ned ran 9.41 km, how far did Sarah run?

• 12.6 km

• 31.42 km

• 13

Tags

CCSS.5.NBT.B.7

Tristan thinks the number "8.097" is read as eight and ninety-seven hundredths. Carla thinks the number is read as eight and ninety-seven thousandths. Who is correct?

• Tristan

• Carla

Tags

CCSS.5.NBT.A.3A

Ms. Roppolo weighed her dog at the beginning of the summer and he weighed 13.89 pounds. At the end of the summer with all of the snacks he ate, he weighed 18.34 pounds. What is the difference of his weight?

• 4.45

• 4

• 32.35

Tags

CCSS.5.NBT.B.7

73 + 48.7 =

• 121

• 121.7

• 122

Tags

CCSS.6.NS.B.3

41.3 - 20.65 =

• 20

• 20.65

• 61.95

Tags

CCSS.6.NS.B.3

79.3 + 10.21

• 69.09

• 89

• 89.51

Tags

CCSS.6.NS.B.3

What is the sum of 15.8 and 4.99?

• 20.79

• 21

• 10.81

Tags

CCSS.6.NS.B.3

What is the difference of 17 and 1.2?

• 16

• 15.8

• 18.2

Tags

CCSS.5.NBT.B.7