Decimal Arithmetic Rules

4.25 x 3.1

• 1.3175

• 13.175

• 131.75

• 1317.5

Tags

CCSS.6.NS.B.3

3.57 x 4.6

• 3.570
• 13.882
• 16.422
• 164.22

Tags

CCSS.6.NS.B.3

0.42  x 100

• .042
• 4.2
• 42
• 420

Tags

CCSS.5.NBT.A.2

You bought a new pack of pencils for $1.50 and a pencil sharpener for $0.99. How much is your total?

• $1.89
• $2.89
• $2.49
• $3.00

Tags

CCSS.6.NS.B.3

0.102 + 0.07

• 1.022
• 0.174
• 0.162
• 0.172

Tags

CCSS.6.NS.B.3

1.53 + 32.6

• 12.34
• 34.13
• 3.413
• 32.6

Tags

CCSS.6.NS.B.3

What is the rule for adding decimals?

• Add first
• Line up the decimals first, then fill in with zeros.
• Move the decimal to the right the total amount of numbers after the decimal.
• Subtract

Tags

CCSS.5.NBT.B.7

Calculate
1.08÷4

• 2.7
• 0.27
• 2.07
• .20

Tags

CCSS.5.NBT.B.7

To divide 19.5÷0.31 start by moving the decimal

• Right two places

• Right one place

• Left two places

• Left one place

Tags

CCSS.6.NS.B.3

Calculate
7.8÷0.03

• 2.6
• 26
• 260
• .26

Tags

CCSS.6.NS.B.3