Question
(i) Evaluate:
(a)(−2)×(−3)×(−4)
(b)2×(−3)×(−4)
(c)26×(−3)×410
(ii) Use the sign of >, < or = in the box to make the statements true.
(a)(−8)+(−4) □ (−8)+(−4)
(b)(−3)+7−(19) □ 15−8+(−9)
(c)23−41+11 □ 23−41−11 [3 MARKS]
(a)(−2)×(−3)×(−4)
(b)2×(−3)×(−4)
(c)26×(−3)×410
(ii) Use the sign of >, < or = in the box to make the statements true.
(a)(−8)+(−4) □ (−8)+(−4)
(b)(−3)+7−(19) □ 15−8+(−9)
(c)23−41+11 □ 23−41−11 [3 MARKS]
Answer:
:
Each part: 1.5 Marks
(i) Multiplication of even no. of negative integers gives a positive integer whereas multiple of odd no. of negative integers gives a negative integer.
(a) We have multiplication of three negative integers. So, the product will be negative integers.
(−2)×(−3)×(−4)=6×(−4)=(−24)
(b) We have multiplication of two negative integers and one positive integer. So, the product will be positive integers.
2×(−3)×(−4)=12×2=24
(c) 26×(−3)×410
=13×−3×25
=−25
(ii)(a) −12<−4
(b) −15<−2
(c) −7>−29
Was this answer helpful ?
:
Each part: 1.5 Marks
(i) Multiplication of even no. of negative integers gives a positive integer whereas multiple of odd no. of negative integers gives a negative integer.
(a) We have multiplication of three negative integers. So, the product will be negative integers.
(−2)×(−3)×(−4)=6×(−4)=(−24)
(b) We have multiplication of two negative integers and one positive integer. So, the product will be positive integers.
2×(−3)×(−4)=12×2=24
(c) 26×(−3)×410
=13×−3×25
=−25
(ii)(a) −12<−4
(b) −15<−2
(c) −7>−29
Was this answer helpful ?
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