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Guidance for solving Exercise 1 on Page 66 of Math 5
Problem:
Mental Calculation:
a) 43.2 : 10
0.65:10
432.9: 100
13.96: 1000
b) 23.7 : 10
2.07 : 10
2.23 : 100
999.8 : 1000
Solution Method:
To perform decimal division by 10, 100, 1000,..., shift the decimal point of the decimal number to the left corresponding to one, two, three,... digits.
Answer:
a) 43.2 : 10 = 4.32
0.65 : 10 = 0.065
432.9 : 100 = 4.329
13.96 : 1000 = 0.01396
b) 23.7 : 10 = 2.37
2.07 : 10 = 0.207
2.23 : 100 = 0.0223
999.8 : 1000 = 0.9998
Part solving exercises on page 66 Math 5, Dividing a decimal number by 10, 100, 1000.. consists of 3 exercises. Next, solving Exercise 1 on page 66 Math 5. Mytour provides suggested answers and detailed solution methods for Solving Exercise 2 on Page 66 Math 5 and Solving Exercise 3 on Page 66 Math 5. Students need to grasp the knowledge of this lesson.
