1. Practice Problems • # 6 • Write the number that is 10,000 less than 3,900,000 • 3,900,000 subtract 10,000 equals 3,890,000

2. Number 7 • Which digits could go in the box if 12.5 is greater than 12._? • The digits would be 4, 3, 2, 1, and 0 • When these digits are added to the 12._ they will be less than 12.5

3. Number 1 • Arrange the numbers in order from least to greatest • 3,196; 3,281; 3,178 • 3,178; 3,196, 3,281 • Stack your digits!!!!

4. Number 14 • Numbers to standard form • A. 402,680 • B. 3,009,504 • C. 1,530,079

5. Number 2 • How much is the robot worth? • Circles = 9 • Rectangles = 40 • Squares = 600 • 600 + 40 + 9 = 649

6. Number 5 • Standard Form • 12,059 • 1,002,304 • 5,000,067,900

7. Number 11 • What digit is in the ten thousands place when these numbers are added together? 372,186 + 429,603 • 801,789 • 0 is in the ten thousands place

8. Number 18 • One tenth is greater than one hundredth: .1 __ .01 • .101 is greater than one thousandth:.101__.001 • .020 is equal to two hundredths: .020 __ .0200

9. Number 29 • Estimate each difference by rounding the numbers to the nearest hundred • 863-327 • 900-300=600 • 1,249-770 • 1,200-800=400

10. Number 23 • Which symbol should be used in each box below? • 6,000 _=_ 200x30 • 320 _<_80x40 • 800x7 _=_70x80