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Grade 5 Math · World 4: Thousandths Dock · Level 41
Decimal Strategies
Choose a method, and estimate first.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 41
- Look at the numbers before you start. 4.98 is nearly 5. Add 5, then take back 2 hundredths.
- Parts that make 1 are handy too. In 0.75 plus 1.25 plus 3, the 75 and 25 hundredths make a whole.
- Round first to know about what to expect. 3.8 plus 2.3 is about 4 plus 2, so the answer should be about 6.
- If someone says the answer is 61, the point is in the wrong place. An estimate catches it.
Georgia's K-12 Mathematics Standards:
- 5.NR.4.4 — Solve problems involving addition and subtraction of decimal numbers to the hundredths place using a variety of strategies.