1.

Using the rule, can’t you do these in your head?(i) (−3) × 4(ii) (−4) × 7(iii) (−1) × 9(iv) (−5) × 4(v) (−2) × 5(vi) (vii) (viii) (ix) (x) (−0.5) × 0.2(xi) (−0.4) × 0.3

Answer»

Using the rule, can’t you do these in your head?



(i) (−3) × 4



(ii) (−4) × 7



(iii) (−1) × 9



(iv) (−5) × 4



(v) (−2) × 5



(vi)



(vii)



(viii)



(ix)



(x) (−0.5) × 0.2



(xi) (−0.4) × 0.3


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