Addition and subtraction including decimal numbers

What is 3.2 + 1.5?

• 4.7
• 5
• 4.8
• 5.1

Subtract: 6.4 – 2.1 = ?

• 4.2
• 4.3
• 4.1
• 4.4

Which number sentence shows the correct regrouping for 5.6 + 3.8?

• 5.6 + 3.8 = 8.14
• 5.6 + 3.8 = 9.4
• 5.6 + 3.8 = 8.4
• 5.6 + 3.8 = 9.2

Find the sum: 0.5 + 0.3 = ?

• 0.9
• 0.8
• 0.7
• 0.6

What is 7.0 – 3.0?

• 4
• 3
• 5
• 2

2.3 + 4.5 = ?

• 6.7
• 6.8
• 7
• 6.6

Add: 12.35 + 4.20 = ?

• 16.25
• 16.45
• 16.55
• 16.5

What is 8.6 – 2.75?

• 5.85
• 6.15
• 5.95
• 6.05

Which is the best estimate for 3.47 + 2.89?

• About 7
• About 5
• About 6
• About 4

Why is 5.07 + 3.9 not equal to 8.16?

• Because 3.9 is smaller
• Because the decimal places don't align
• Because 5.07 is bigger
• Because it’s more than 10