Page 24 - 新思维数学学生用书2 样章
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1.3 Comparing and ordering numbers
5 Sofia’s number sequence is 74, 64, 54, 44, 34.
Complete the description of Sofia’s number sequence.
at 74. Count in tens. Stop at .
Worked example 4
Compare 34 and 43. Which is the greater number?
43 has 4 tens. 10s 1s
34 only has 3 tens.
43 must be greater than 34.
I do not need to
look at the ones.
34 is closer to
0 than 43.
34 43
0 10 20 30 40 50 60 70 80 90 100
Answer: 43 is the greater number.
6 Compare 75 and 57. 10s 1s
Which is the greater number?
Use a number line or place
value grid to help you.
0 10 20 30 40 50 60 70 80 90 100
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