Dealing with Decimals
This is a level 4 number activity from the Figure It Out series. It relates to Stage 7 of the Number Framework.
A PDF of the student activity is included.
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show understanding of tenths, hundredths place value
FIO, Level 3, Number, Book 1, Dealing with Decimals, page 16
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Activity One
This activity extends students’ place-value understanding to three-digit decimals.
Note that these decimal compact numeral cards differ in shape from those used for page 2 in that they have the alignment arrow on the left so that the decimal numeral can be expanded to the right.
A copymaster of compact numeral cards is provided at the back of this booklet.
Activity Two
If students have difficulty with question 2, they could use a set of compact numeral cards. They could then explore what to add or subtract to make the required change in one operation.
Answers to Activities
Activity One
a. 8.37 8.57 8.54 1.34 1.37 1.54 1.57
b.
Activity Two
1. 6.09 + 0.2 =
2. a. 4.71 – 0.7 =
b. 8.88 – 0.08 =
c. 3.25 – 3 =
d. 2.743 – 0.04 =
e. 3.55 – 0.5 =
f. 4.52 – 0.02 =
g. 7.39 + 0.3 =
h. 9.027 – 0.007 =