homework_remembering_te_grade_4-1zwawpi

2-3
Name
Date
Find each product by factoring the tens. Draw rectangles
if you need to.
1. 6 × 2, 6 × 20, and 6 × 200
12; 12 × 10 = 120;
12 × 100 = 1,200
3. 5 × 5, 5 × 50, and 5 × 500
25; 25 × 10 = 250;
25 × 100 = 2,500
5. 6 × 5, 60 × 5, and 60 × 50
30; 30 × 10 = 300;
30 × 100 = 3,000
2. 4 × 8, 4 × 80, and 4 × 800
32; 32 × 10 = 320;
32 × 100 = 3,200
4. 5 × 9, 50 × 9, and 500 × 9
45; 45 × 10 = 450;
45 × 100 = 4,500;
6. 7 × 6, 70 × 6, and 70 × 60
42; 42 × 10 = 420;
42 × 100 = 4,200
On a sheet of grid paper, draw two different arrays of
connected squares for each total. Label the sides and
write the multiplication equation for each of your arrays.
7. 18 squares
Answers may vary. Possible equations: 2 × 9 = 18;
1 × 18 = 18; 3 × 6 = 18
© Houghton Mifflin Harcourt Publishing Company
8. 20 squares
Answers may vary. Possible equations: 1 × 20 = 20;
2 × 10 = 20; 4 × 5 = 20
9. 24 squares
Answers may vary. Possible equations: 1 × 24 = 24;
2 × 12 = 24; 3 × 8 = 24; 4 × 6 = 24
UNIT 2 LESSON 3 Mental Math and Multiplication 33