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Math-Unit 5 Review

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Math-Unit 5 Review

1. 1. UNIT 5 REVIEW Everyday Math Grade 4 BES
2. 2. Get your whiteboard ready! <ul><li>We’ll go lesson by lesson to review the concepts you learned throughout the unit. </li></ul><ul><li>Ready, set… </li></ul><ul><li>Thinking cap on? </li></ul><ul><li>Go!!! </li></ul>
3. 3. Lesson 5.1-X Fact Extensions <ul><li>80 x 40 = </li></ul><ul><ul><li>3,200 </li></ul></ul><ul><li>30 x 700 = </li></ul><ul><ul><li>21,000 </li></ul></ul><ul><li>50 x _____ = 250 </li></ul><ul><ul><li>5 </li></ul></ul><ul><li>_____ x 90 = 54,000 </li></ul><ul><ul><li>600 </li></ul></ul><ul><li>Skill : Extend basic facts to products of ones and tens and products of tens and tens </li></ul><ul><li>Strategy : Ignore the zeros, multiply the remaining basic factors, count up the zeros and add them onto your product </li></ul>
4. 4. Lesson 5.2- Multiplication Wrestling <ul><li>Purpose : to provide practice with extended multiplication facts and to introduce the principles of multi-digit multiplication </li></ul><ul><li>Let’s move right along! </li></ul>
5. 5. Lesson 5.3-Estimating Sums <ul><li>868 + 423 = </li></ul><ul><ul><li>900 + 400 = </li></ul></ul><ul><ul><ul><li>1,300 </li></ul></ul></ul><ul><li>591 + 632 + 372 = </li></ul><ul><ul><li>600 + 600 + 400 </li></ul></ul><ul><ul><ul><li>1,600 </li></ul></ul></ul><ul><li>287 + 1,793 + 2,552 = </li></ul><ul><ul><li>300 + 2,000 + 3,000 </li></ul></ul><ul><ul><ul><li>5,300 </li></ul></ul></ul><ul><li>17,922 + 4,008 + 5,827 = </li></ul><ul><ul><li>18,000 + 4,000 + 6,000 </li></ul></ul><ul><ul><ul><li>28,000 </li></ul></ul></ul><ul><li>Purpose : to provide practice estimating sums </li></ul><ul><li>Strategy : the larger the place value you round to, the easier it is to estimate in your head </li></ul><ul><li>So remember, keep it simple! </li></ul>
6. 6. Lesson 5.4- Estimating Products <ul><li>Purpose : to practice estimating whether a product is in the tens, hundreds, thousands, or more </li></ul><ul><li>Strategy : similar to addition, once numbers are rounded, multiply (ignore the zeros, then add them to the product) </li></ul><ul><li>49 x 22 = </li></ul><ul><ul><li>50 x 20 = </li></ul></ul><ul><ul><ul><li>1,000 (thousands) </li></ul></ul></ul><ul><li>97 x 73 = </li></ul><ul><ul><li>100 x 70 </li></ul></ul><ul><ul><ul><li>7,000 (thousands) </li></ul></ul></ul><ul><li>190 x 68 = </li></ul><ul><ul><li>200 x 70 </li></ul></ul><ul><ul><ul><li>14,000 (ten-thousands) </li></ul></ul></ul><ul><li>4,847 x 411 = </li></ul><ul><ul><li>5,000 x 400 = </li></ul></ul><ul><ul><ul><li>2,000,000 (millions) </li></ul></ul></ul>
7. 7. Lesson 5.5 and 5.6- Partial-Products <ul><li>Purpose : to review and practice the partial-products algorithm </li></ul><ul><li>Remember: pay close attention to place values (values of digits) </li></ul><ul><li>Let’s practice! </li></ul><ul><li>73 x 9 = </li></ul><ul><ul><li>657 </li></ul></ul><ul><li>45 x 81 = </li></ul><ul><ul><li>3,645 </li></ul></ul>
8. 8. Lesson 5.7- Lattice Multiplication <ul><li>Purpose : to review and practice the lattice method for multiplication </li></ul><ul><li>This method relies on your basic fact recall. </li></ul><ul><li>Pay close attention as you multiply and add! </li></ul><ul><li>Let’s practice! </li></ul><ul><li>34 x 8 </li></ul><ul><ul><li>272 </li></ul></ul><ul><li>971 x 5 </li></ul><ul><ul><li>4,855 </li></ul></ul><ul><li>56 x 73 </li></ul><ul><ul><li>4,088 </li></ul></ul>
9. 9. Lesson 5.8-BIG Numbers <ul><li>Part I: Reading </li></ul><ul><ul><li>356,092 </li></ul></ul><ul><ul><li>92,837,006 </li></ul></ul><ul><ul><li>3,872,093,576 </li></ul></ul><ul><li>Part II: Writing </li></ul><ul><ul><li>Listen carefully as your teacher reads aloud some BIG numbers. Record them on your whiteboard. </li></ul></ul>
10. 10. Lesson 5.9-Powers of 10 <ul><li>Purpose : to introduce exponential notation for powers of 10 </li></ul><ul><li>Exponents help us name the values of places in our base-ten system. </li></ul><ul><li>Let’s review! </li></ul><ul><ul><li>(No whiteboards needed.) </li></ul></ul><ul><li>1 = 10 0 </li></ul><ul><li>Let’s build on that piece of information! </li></ul><ul><li>10 = 10 1 = 10 </li></ul><ul><li>100 = 10 2 = 10 x 10 </li></ul><ul><li>1,000 = 10 3 = 10 x 10 x10 </li></ul><ul><li>10,000 = 10 4 10 x 10 x 10 x 10 </li></ul><ul><li>100,000 = 10 5 10 x 10 x 10 x 10 x 10 </li></ul><ul><li>1,000,000 = 10 6 10x10x10x10x10x10 </li></ul>
11. 11. Lesson 5.10- Rounding LARGE Numbers <ul><li>Purpose : to discuss sensible ways to report large numbers and to review rounding a number to a certain place value </li></ul><ul><li>Strategy : underline the given place value, look to place value to the right, 0-4 stay, 5-9 round up </li></ul><ul><li>Let’s practice! </li></ul><ul><li>Round to the nearest thousand 18,219 </li></ul><ul><ul><ul><li>18,000 </li></ul></ul></ul><ul><li>Round to the nearest hundred-thousand 3,478,398 </li></ul><ul><ul><li>3,500,000 </li></ul></ul><ul><li>Round to the nearest million 673,908,004 </li></ul><ul><ul><li>674,000,000 </li></ul></ul>
12. 12. Lesson 5.11-Comparing Data <ul><li>Purpose : to look up and compare numerical data </li></ul><ul><li>Strategy : line up the place values in each number, starting on the left look for the larger digit </li></ul><ul><li>Let’s practice! </li></ul><ul><li>Get into groups of three. </li></ul><ul><li>Two of you need to need to write numbers in the hundred-thousands. </li></ul><ul><li>The third person needs to write <, >, or = to complete each sentence. </li></ul><ul><li>Finally, turn and face the teacher to have your work checked. </li></ul><ul><li>Round 2: ten-millions </li></ul><ul><li>Round 3: billions </li></ul>
13. 13. Lesson 5.12- Checking Progress <ul><li>Purpose : to assess your progress on math content through the end of Unit 5. </li></ul><ul><li>That means, other skills, such as measuring and computation involving decimals, will be tested as well. </li></ul><ul><li>Good luck! </li></ul>