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### Course: 5th grade (2018 edition)>Unit 1

Start with simple problems like 0.2 + 0.4 and build to more complex problems like 10.3 + 36.75.
The problems go from easier to more difficult, and along the way, there are examples and explanations for the times you get stuck. You'll learn the most if you look at the times you're confused as chances to learn!
Let's start by adding two tenths together.

# Section 1: Adding tenths less than one

Problem 1a
$0.5+0.4=$

Beautiful, let's move on to problems with whole numbers and tenths.

# Section 2: Adding whole numbers and tenths

Problem 2a
$6.4+2=$

Excellent, next up are problems where both numbers have a whole number and a tenth.

# Section 3: Adding tenths greater than one

Problem 3a
$3.7+22.1=$

Rockin'! Let's move on to adding hundredths.

Problem 4a
$0.31+0.64=$

Sweet, now we're ready to solve problems with hundredths, tenths, and whole numbers.

# Section 5: Adding whole numbers, tenths, and hundredths

Problem 5a
$42+4.27=$

Great, let's finish with a few more challenging problems.

# Section 6: Challenge problems

Problem 6a
$2.59+5.16=$