Decimal Operations

Catrine split a piece of wood that was 49.4 inches into 4 equal pieces. How long was each piece?

• 197.6 inches

• 53.4 inches

• 12.35 inches

• 45.4 inches

Answer explanation

This is a division problem!

Ally bought 6 sodas for her and some friends. She paid $1.29 for each. How much did the sodas cost her?

• $7.74

• $0.22

• $7.29

• $4.71

Answer explanation

This is a multiplication problem!

Sammi bought some apples for $4.79 and some coconut water for $1.89. How much did this cost her altogether?

• $2.53

• $9.05

• $2.90

• $6.68

Answer explanation

This is an addition problem!

Audri had $70 in her bank account. She withdrew $30.58. How much is left in her account?

• $100.58

• $39.42

• $2140.60

• $2.29

Answer explanation

Withdrew means they took out money. This is a subtraction problem!

2.589 + 45.12

• 47.709

• 477.09

• 47709

• 4.7709

Answer explanation

Make sure you line up the decimals and put zeros in as placeholders!

45.1274 + 2.877

• 480044

• 48.0044

• 480.044

• 4800.44

Answer explanation

Make sure you line up the decimal and include zeros as placeholders!

67.8 + 3.325

• 71125

• 7112.5

• 711.25

• 71.125

89.354 + 11.2546

• 1006.086

• 100.6086

Answer explanation

Remember, we can use estimation to help us make a good guess and get rid of some choices that don't make sense. We can round 89.354 to 89 and 11.2546 to 11. 89+11=100 so our answer should be really close to 100.

4.51 + 68.722

• 73.232

• 732.32

Answer explanation

Remember, we can use estimation to help us check our answer and get rid of choices that don't make sense. 4.51 can round to 5. 68.722 can round to 69. 4+69=73 so our answer should be really similar to 73.

You buy a shirt for 12.97 and a pair of shoes for 49.99. How much money do you need?

• $6.30

• $62.96

• $629.60

• $6296.00

Answer explanation

You're trying to figure out the total amount of money you need. You need to put these prices together, or add them! Don't forget to line up your decimals!