Cogito
Grade 4 Math · Chapter 6 · Lesson 2
Hundredths
Cut each tenth into ten again.
10 problems · about 14 minutes · 4.NF.C.6
What this lesson teaches
The child writes a fraction with denominator 100 in decimal notation.
- A whole cut into 100 pieces gives hundredths.
- The second place after the point is hundredths.
- Ten hundredths make one tenth.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
2 problemsReview — Tenths: How many tenths are in 0.8?
Answer 8
Why 0.8 is 8/10.
Review — Line Plots with Fractions: Difference between 7/8 and 2/8, in eighths?
Answer 5
Why 5/8.
Warm Up
Straightforward practice. Get the method working first.
4 problemsHow many hundredths are in 0.09?
Answer 9
Why 0.09 is 9/100.
How many hundredths make one tenth?
Answer 10
Why 10 hundredths make 1 tenth.
How many hundredths are in 0.56?
Answer 56
Why Fifty-six hundredths.
How many hundredths make one whole?
Answer 100
Why A full grid.
Build It Up
The same ideas with more to keep track of.
2 problemsHow many hundredths are in 0.08?
Answer 8
Why Eight hundredths.
How many hundredths make 6 tenths?
Answer 60
Why Each tenth is 10.
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
2 problemsThe Coins: How many hundredths are in 0.42?
Answer 42 hundredths
Why 42/100.
The Grid: How many hundredths make 3 tenths?
Answer 30 hundredths
Why 30/100, which is 0.30 or 0.3.