Adding and Subtracting Decimals

Q.1) 50.3 + 0.79 =

• 50.19

• 51.09

• 52.19

• 60.09

Q. 2) 48.7 – 1.2 =

• 36.7

• 38.5

• 47.5

• 49.9

Q. 3) Giselle weighed two different samples of chemicals in her science class. The first sample weighed 39.05 grams. The second weighed 56.7 grams. She then mixed the two chemicals together. What was the weight of the combined samples?

• 17.65 grams

• 44.72 grams

• 85.85 grams

• 95.75 grams

Q. 4) Lacy and Gerald gave their heights for a school survey. Lacy’s height is 51.25 inches. Gerald’s height is 46.65 inches. How many inches taller is Lacy than Gerald?

• 4.6 inches

• 5.4 inches

• 15.4 inches

• 15.6 inches

Q. 5) Maria bought a bicycle lock with a $10.00 bill. The bicycle lock cost $6.27. How much change did Maria get back?

• $3.73

• $4.27

• $14.83

• $16.27

Q. 6) Maya bought paints and brushes at the craft store for $32.87. How much should she receive back if she gave the cashier $40.00?

• $7.13

• $8.23

• $12.13

• $18.23

Q. 7) Miguel bought a remote control helicopter for $17.52. How much change should he receive if he paid the cashier $20.00?

• $2.48

• $12.48

• $13.58

• $37.52

Q. 8) Marcel bought a dozen roses for $27.96 and a box of chocolates for $12.98. How much did he spend for both items?

• $14.98

• $39.84

• $40.94

• $49.84

Q. 9) Camden bought a shirt for $34.98 and a tie for $18.89. How much did he spend all together?

• $16.09

• $42.77

• $47.19

• $53.87

Q. 16) What is the difference between 520.16 and 392.79?

• 127.37

• 128.63

• 238.47

• 272.63