decimal operations

What is the first step when adding and subtracting decimals?

• Line up the numbers
• Line up the decimals
• Add or subtract like normal
• Add in placeholders

2.98+5.3=

• 2.51
• 8.28
• 3.63
• 2.37

7.9-3.47=

• 11.37
• 4.43
• 3.32
• 4.37

55.78+4.6=

• 60.28
• 55.32
• 56.44
• 60.38

7.05-4.6=

• 2.45
• 3.65
• 11.65
• 11.45

94-4.8=

• 89.2
• 5.4
• 90.80
• 98.8

12.3 +13.45

• 14.68
• 25.75
• 1.15
• 25.48

Once the numbers are lined up in a multiplication problem, how do I know where my decimal is placed in my answer?

• Bring the decimal straight down
• There is no decimal
• Count how many numbers are behind all decimals in the problem
• Move the decimal 2 spaces from the front

Add the decimal into this number:
2.39 x 4.37 = 104443

• 10.4443
• 104.443
• 10444.3
• 1.04443

Big Money Pedro bought a steak that weighs 1.4 pounds. The price is $4.50 per pound. How much does the steak cost?

• $4.20
• $6.90
• $22.50
• $6.30