[" (a) "(-8)+(-4)],[" (b) "(-3)+7-(19)],[[" (c) "23-41+11," (年) "(-8)-(-4)],[" (d) "39+(-24)-(15),15-8+(-9)],[" (e) "-231+79+51," 23-41-11"],[36+(-52)-10+159+10],[-399+159+125]]

Use the sign of lt, gt or = in the box to make the statement true (a) (-8)+(-4) __ (-8)-(-4) (b) (-3)+7-(19) ___ 15-8+(-9) (c) 23-41+11 ___ 23-41-11 (d ) 39+(-24)-(15)____ 36+(-52)-(-36) (e) -231+79+51 ___ -399+159+81

Use the sign of lt, gt or = in the box to make the statement true(a) (-8)+(-4) __ (-8)-(-4) (b) (-3)+7-(19) ___ 15-8+(-9) (c) 23-41+11 ___ 23-41-11 (d ) 39+(-24)-(15) ____ 36+(-52)-(-36) (e) -231+79+51 ___ -399+159+81

11, 13, 17, 19, 23, 29, 31, 37, 41, (.....) (a) 43 (b) 47 (c) 53 (d) 51

5/8+3/4-7/(12) is equal to: (a) (15)/(24) (b) (17)/(24) (c) (19)/(24) (d) (21)/(24)

5/8+3/4-7/(12) is equal to: (15)/(24) (b) (17)/(24) (c) (19)/(24) (d) (21)/(24)

Evaluate : (i) (3)/(4)-(4)/(5) (ii) -3-(4)/(7) (iii) (7)/(24)-(19)/(36) (iv) (14)/(15)-(13)/(20) (v) (4)/(9)-(2)/(-3) (vi) (7)/(11)- (-4)/(-11) (vii) (-5)/(14) -(-2)/(7) (viii) (-5)/(-8)-(-3)/(4)

Evaluate : a. 721 - 567 + 382 - (345 - 487) b. 823 - 535 + 489 - (521 - 278) c. 4 + 12 + (-7) + (-8) d. (-23) + 19 + (-13) + 6 e. 4567 + (-6234) + (76) + (-345) + 74 f. |8 - 10| g. |-15 + 9| h. |20 - 23| i. |-30 + 16| j. |3 - (9 - 1)| k. |21 - (39 - 11)|

Verify that: (i) .^(15)C_(8)+.^(15)C_(9)-.^(15)C_(7)=0 " " (ii) .^(10)C_(4)+.^(10)C_(3)=.^(11)C_(4)