Page 40 - 新思维数学活动用书7 样章
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2.6 Inequalities
9 Zara looks at the inequality z < −5.
A list of the integer
values that z could be is:
−4, −3, −2, −1, 0, 1, …
Is Zara correct? Explain your answer.
10 For each of these inequalities, write down:
i the smallest integer that p could be
ii a list of the integer values that p could be.
a p > 8 b p > −3 c p > 4.7
11 For each of these inequalities, write down:
i the largest integer that q could be
ii a list of the integer values that q could be.
a q < −1 b q < 16 c q < 3.9
Challenge
12 Copy each number line and show each inequality on the number line.
a x > 1.5 b x < 3.75
0 1 2 3 4 1 2 3 4 5
c y > 4.6 d y < 8.25
3 4 5 6 5 6 7 8 9
13 Write down the inequality shown on these number lines. Use the letter y.
a b
–2 –1 0 1 2 10 11 12 13
c d
2 3 4 5 25 26 27 28 29
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