Page 12 - 新思维数学学生用书5 样章

1.1 Understanding place value

Worked example 1

Write this number in words and digits.

10 000 + 2000 + 300 + 40 + 5 + 0.6 + 0.07

Answer: Tip

12 345.67

Twelve thousand, three hundred Remember to write the
and forty-five point six seven. decimal part of the number

Use a place value grid to help you. as ‘six seven’ and not as
‘sixty-seven’.

ten thousands tenths hundredths

1 1
10 000s 1000s 100s 10s 1s 10 s 100 s

1 2 3 4 5 6 7

Exercise 1.1

1 Write these numbers in digits.

a One thousand and one point zero one
b Five hundred thousand and five point nine

c Four hundred and three thousand, and thirty-four point six six
2 Write these numbers in words.

a 345.09 b 5378.12

c 158 035.4 d 3030.03

3 What is the value of the digit 7 in these numbers?

a 6703.46 b 70 213.8

c 606 456.7 d 234 560.07

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