Question

数学计算题求解

用最简便的方法！！

Answer 1

(1)
原式
=(0.25)^23×2^46×2×2
=(0.25)^23×(2^2)^23×4
=(0.25×2^2)^23×4
=1^23×4
=4

(2)
原式
= -8×(-0.125)^2000×(-8)^2000×(-8)
= 64×(-0.125×(-8))^2000
= 64×1^2000
= 64

Answer 2

(1) (0.25)^23 *2^48
=(0.25)^23 * 4^24
=(4*0.25)^23 *4
=4
(2) (-2)^3*(-0.125)^2000 *(-8)^2001
= (-2)^3*(-0.125)^2000 *(-8)^2000* (-8)
=(-2)^3*(0.125*8)^2000* (-8)
=-8*(-8)
=64

Answer 3

（1）（0.25）*23 ×2*48
=（1/4）*23 × 2*48
= 1*23/4*23 ×2*48
=1/2*46 ×2*48
= 2*2=4
（2）（-2）*3 ×（-0.125）*2000 ×（-8）*2001
= （-2）*3 ×（-1/8）*2000 ×（-8）*2001
=（-2）*3 ×（-8）
=64

Answer 4

（1）解：（0.25）^23*2^48
=(1/4)^23*2^48
=((1/2)^2)^23*2^48
=(1/2)^46 * 2^48
=(1/2*2)^46*2^2
=1^46 * 2^2
=1*4 = 4
(2）解：（-2）^3*(-1/8)^2000*(-8)^2001
=(-8)* (-1/8)^2000 *(-8)^2001
=(-8)^2002 * (-1/8)^2000
=(8*1/8)^2000 *8^2
=1*64 = 64

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Answer 5

原式=（0.25）^23*4^24=(0.25*4)^23*4=1^23 *4=4
原式=（-8）*（-0.125）^2000*(-8)^2001
=(-8)^2002*(-0.125)^2000
=(-8*(-0.125))^2000*(-8)^2
=1^2000*64
=64

Answer 6

原式=（1/4）^23x2^48
=（1/2）^46x2^48
=2^2
=4
原式=-8x（-1/8)^2000x(-8)^2000x(-8)
=64