MATH PRACTICE FOR FOURTH GRADERS INVOLVING MATH

PRACTICE TEST

1. Quarter 2: Lesson 1B Content: A. Multiplying Whole Numbers SUB-TOPIC 1: Multiplying 3 to 4-Digit by 1-Digit Numbers with Regrouping

2. Multiply the given numbers mentally 302 X 2 604

3. Multiply the given numbers mentally 441 X 2 882

4. Multiply the given numbers mentally 2 00 X 3 600

5. Multiply the given numbers mentally 240 X 2 480

6. Multiply the given numbers mentally 211 X 3 633

7. Solve the following using any method you’ve learned yesterday . 1. 2 213 x 2 = _______ 2. 8 211 x 3 = _______ 3. 5 423 x 2 = _______ 4. 8 120 x 3 = _______ 5. 9 004 x 2 = _______ 4 426 24 633 10 846 24 360 18 008 Explicitation

8. A. Use base ten blocks to represent the product of 136 × 4. X 4 = Worked Example 136

9. Use base ten blocks to represent the product of 136 × 4. Worked Example Hundreds Tens Ones 5 136 × 4 = 544 4 4

10. B. Find the product of 136 × 4 using expanded form express 136 in expanded form 136 × 4 = (100 + 30 + 6) × 4 Worked Example

11. b) By distributive property we can have, 136 × 4 = (100 × 4) + (30 × 4) + (6 × 4) = 400 + 120 + 24 = 400 + 100 + 20 + 24 = 500 + 44 So, 136 × 4 = 544 Worked Example

12. 7 152 × 6 = 7 000 + 100 + 50 + 2× 6 Solution: 7 152 × 6 = (7 000 × 6) + (100 × 6) + (50 × 6) + (2 × 6) = 42 000 + 600 + 300 + 12 = 42 912 Worked Example

13. Find the product of 136 × 4 using standard form × 4 4 5 Worked Example 1 3 6 6 4 3 1 2 2 4 ones tens 6x4 4 3x4 2 1 + 2 4 1 tens hundreds 1

14. Find the product of 136 × 3 using standard form × 3 4 Worked Example 1 3 6 6 3 3 1 1 1 8 ones tens 6x3 8 3x3 9 + 1 1 tens hundreds 1

15. Find the product of 7 152 × 6 using standard form × 6 1 9 Worked Example 1 5 2 2 6 5 1 1 2 3 7 7 2 4

16. A. Sketch a new set of base pieces to multiply 163 by 3 then show regrouping. Lesson Activity

17. B. Find the product of the following numbers using your preferred strategy. 1. 372 × 8 = ____________ 2. 2 019 × 9 = ____________ 3. 7 865 × 6 = ____________ 4. 796 × 5 = ____________ 5. 1 354 × 7 = _______________ Lesson Activity 2 976 18 171 47 190 3 980 9 478

18. Thank You!