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012_G3U2_TG_CA 2011.4.6 12:30 PM ˘ ` 027 PDF_In 2540DPI 150LPI T 02Find the Red Ball Unit

Math VoCabulary ten thousand: 10,000

2 . Follow the arrow rules and fill in the blanks. 2. Follow the rules shown by the arrows and
skip-count to find the missing numbers. After
Rules students have solved the problems, have
: +10 them develop their communication skills by
: +100 explaining how they skip-counted to find the
: +1,000 missing numbers.

a. 1,263 1,273 2b. This is an example of how to skip-count
1,253 backward.
What do you get if you skip-count by tens
1,353 2,253 1,283 once from 5,867? 5,857.
1,453 What do you get if you skip-count by tens
3,253 4,253 twice from 5,867? 5,847.
1,553 5,837 What do you get if you skip-count by tens
5,567 5,847 three times from 5,867? 5,837.
5,667 Which place value has changed and by
how much? The tens place value has
5,767 5,857 changed. It became smaller by three times.
4,867 If you skip-count by tens backward from
b. 3,237, which place value will be changed
5,867 and by how much? The tens place value will
become smaller by one.

2,867

3,867

2. Find the Red Ball 19

The Value of Ten Thousand Skip-counting by Thousands
A number, which is 1000 bigger than 9000. If you skip-count by thousands a times from any
A number, which is 100 bigger than 9900. number, that number will increase by a times.
A number, which is 10 bigger than 9990.
A number, which is 1 bigger than 9999.

3A Unit 02 027