Find the product, using suitable property, Mention the property used. a) 36 × (– 28) + (– 28) × (–26) b) (– 718) × 101
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n4ambeashawla
n4ambeashawla
12.04.2016
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Find the product, using suitable properties:
(a) 26 × (– 48) + (– 48) × (–36)
(b) 8 × 53 × (–125)
(c) 15 × (–25) × (– 4) × (–10)
(d) (– 41) × 102
(e) 625 × (–35) + (– 625) × 65
(f) 7 × (50 – 2)
(g) (–17) × (–29)
(h) (–57) × (–19) + 57
NCERT Class 7th Mathematics Chapter 1 Integers
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PEMDAS is the order of operation.
Parenthesis; Exponents; Multiply; Divide; Add; Subtract.
(a) 26 × (– 48) + (– 48) × (–36) ⇒ -1248 + 1728 = 480
(b) 8 × 53 × (–125) ⇒ 424 x -125 = -53,000
(c) 15 × (–25) × (– 4) × (–10) ⇒ 15 * -1000 = -15,000
(d) (– 41) × 102 = -4182
(e) 625 × (–35) + (– 625) × 65 ⇒ -21875 + (-40625) = -62,500
(f) 7 × (50 – 2) ⇒ 7 * 48 = 336
(g) (–17) × (–29) = 493
(h) (–57) × (–19) + 57 ⇒ 1,083 + 57 = 1,140