Page 17 - 新思维数学活动用书6 样章
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1 The number system
10 Write the letters of all the numbers that round to 10.5 to the nearest tenth.
Rearrange the letters to make a word.
A B C D E F G H I
10.81 10.56 10.32 10.65 10.44 10.57 10.44 10.43 19.8
J K L M N O P Q R
10.48 10.71 10.51 10.58 10.55 9.24 10.59 10.42 10.57
S T U V W X Y Z
10.44 10.58 10.54 10.25 10.05 10.35 10.46 10.41
11 Stefan says, ‘When I round 16.51 and 17.49 to the nearest whole number, the answer
is the same. When I round 16.51 and 17.49 to the nearest tenth, the difference
between the answers is one.’
Explain why Stefan is correct.
16
