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Set 1-5 (pages
14–17) |
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How many hundreds are in 7,000? |
Remember
that each place in our
number system is 10 times the place
on its right. |
| 1. |
0.9
x _____ = 90 |
| 2. |
80 x _____
= 800 |
| 3. |
700 x ______=
7,000,000 |
| 4. |
0.05 x
______= 50 |
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There are 70 hundreds in 7,000. |
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Set 1-6 (pages 18–19) |
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Tell
the problem in your own words and
what the question is asking. |
Art
Museum Westwood Elementary sent
25 fourth-grade students, 18 fifth-grade
students, and 38 sixth-grade students to
the art museum. The fourth- and fifth- grade
students went on the first tour
together. How many students went on
the first tour? |
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Remember
to start a problem by asking
yourself what you know and what you
are trying to find. |
| Use
the Art Museum problem. |
| 1. |
Identify
the key facts and details. |
| 2. |
Show the
main idea. |
| 3. |
Solve the
problem. Write your
answer in a complete sentence. |
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Set 1-7
(pages 22–25) |
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Show
how you could add 580 + 460
using mental math. |
| Use compensation. |
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Remember
that you can use compatible
numbers, compensation, or equal
additions to find sums and differences. |
| 1. |
1,990 +
1,360 |
| 2. |
2,940 –
1,820 |
| 3. |
5,130 +
470 |
| 4. |
670 –
280 |
| 5. |
3,560 –
1,460 |
| 6. |
60 + 120
+ 140 |
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So, 580 + 460 = 1,040. |
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