Question 511 MarkFind each of the following products.$(-21) \times(-30)$AnswerWe have, $(-21) \times(-30)=21 \times 30=630$View full question & answer→
Question 521 MarkFind each of the following products.$(-1) \times 225$AnswerWe have, $(-1) \times 225=-(1 \times 225)=-225$View full question & answer→
Question 531 MarkFind each of the following products.$3 \times(-1)$AnswerWe have, $3 \times(-1)=-(3 \times 1)=-3$View full question & answer→
Question 541 MarkWrite a negative integer and a positive integer, whose difference is -3.AnswerA negative integer and a positive integer, whose difference is -3, can be -1 and 2.$\because$ Difference $=-1-(2)=-1-2=-3$View full question & answer→
Question 551 MarkWrite a negative integer and a positive integer, whose sum is -5.AnswerA negative integer and a positive integer, whose sum is -5, can be -12 and 7.$\because \text { Sum }=-12+7=-12+7=-5$View full question & answer→
Question 561 MarkWrite a pair of negative integers, whose difference gives 8.AnswerA pair of negative integers, whose difference gives 8, can be -10 and -18.$\because$ Difference $=-10-(-18)=-10+18=8$View full question & answer→
Question 571 MarkWrite down a pair of integers whose.sum is 0.AnswerA pair of integers, whose sum is 0 , can be -3 and 3 . $\because$ Sum $=-3+3=-3+3=0$ View full question & answer→
Question 581 MarkWrite down a pair of integers whose.difference is -10.AnswerA pair of integers, whose difference is -10 , can be -12 and -2. $\because$ Difference $=-12-(-2)=-12+2=-10$View full question & answer→
Question 591 MarkWrite down a pair of integers whose.sum is -7.AnswerA pair of integers, whose sum is -7 , can be -2 and -5. $\because$ Sum $=-2+(-5)=-2-5=-7$View full question & answer→
Question 601 MarkFind the value of $x$, if $16 \div x=32-16$.AnswerGiven, $16 \div x=32-16 \Rightarrow 16 \div x=32+(-16)$$\Rightarrow16 \div x=16 \Rightarrow x=\frac{16}{16}=1$View full question & answer→
Question 611 MarkFind the value of the following divisions.(i) $(-20) \div5$(ii) $15 \div(-5)$(iii) $(-12) \div(-6)$Answer(i) $(-20) \div5=-(20 \div5)=-4$(ii) $15 \div(-5)=-(15 \div5)=-3$(iii) $(-12) \div(-6)=12 \div 6=2$View full question & answer→
Question 621 MarkFind the value of $x$, if $4 \times x+4=8$.AnswerGiven, $4 \times x+4=8 \Rightarrow 4 x=8-4$$\Rightarrow 4 x=4 \Rightarrow x=\frac{4}{4}=1$View full question & answer→
Question 631 MarkWrite the integer, whose product with $(-1)$ is 1.AnswerIf $(-1)$ is multiplied by $(-1)$, then it gives 1 always i.e. $(-1) \times(-1)=1$ $[\because(-a) \times(-b)=(a \times b)]$View full question & answer→
Question 641 MarkWrite the integers, whose product with $(-1)$ is 0.Answer0 , multiplied by any integer gives always 0.So $\quad 0 \times(-1)=0$e.g. (i) $(-7) \times 0=0$ (ii) $5 \times 0=0$View full question & answer→
Question 651 MarkFind the value of the following multiplication.(i) $3 \times(-4)$(ii) $(-2) \times(-3)$(iii) $(-3) \times 2$Answer(i) $3 \times(-4)=-(3 \times 4)=-12$ $[\because a \times(-b)=-(a \times b)]$(ii) $(-2) \times(-3)=2 \times 3=6$ $[\because(-a) \times(-b)=(a \times b)]$(iii) $(-3) \times 2=-(3 \times 2)=-6$ $[\because(-a) \times b=-(a \times b)]$View full question & answer→
Question 661 MarkWrite a positive integer and a negative integer whose differecne is a negative integer.AnswerLet first integer $=(-7)$ and second integer $=2$Difference $=(-7-2)=(-9)$ [negative integer]View full question & answer→
Question 671 MarkWrite a positive integer and a negative integer whose sum is a positive integer.AnswerLet first integer $=8$ and second integer $=-2$Sum $=8+(-2)=6$ [positive integer]View full question & answer→