0.747*0.25+0.53*0.025-2.5*0.04 Ingenious calculation: 0.747 *. 25 + 0.53 * 0.025-2.5 * 0.025

0.747*0.25+0.53*0.025-2.5*0.04 Ingenious calculation: 0.747 *. 25 + 0.53 * 0.025-2.5 * 0.025

0.747*.25+0.53*0.025-2.5*0.04
=0.747*0.25+0.053*0.25-0.25*0.4
=(0.747+0.053-0.4)*0.25
=0.4*0.25
=0.1

(1.025+4.8+8.02+0.75×2.5+3.25)×7.8

147.966

0.8 hours = how many minutes 7200 square meters = how many hectares 1.2 △ 0.32 = how many △ 32 48 △ 0.025 = how many △ 25
0.8 hours = how many minutes 7200 square meters = how many hectares 1.2 △ 0.32 = how many △ 32 48 △ 0.025 = how many △ 25

8 hours = 48 minutes
7200 M2 = 0.72 ha
1.2÷0.32=12÷32
48÷0.025=48000÷25

A = 0.00... 012 (100 zeros) B = 0.0.. 08 (101 zeros) find a + B = A-B = a * B=

A + B = 0.00... 02 (100 zeros)
A-B = 0.0.. 04 (101 zeros)
a=1.2*10^-101
b=8*10*-102
A * b = 9.6 * 10 ^ - 203 = 0.0.. 096 (202 zeros)

Given a = 0.0... 012 199 zeros, B = 0.0... 025 100 zeros, C = 0.0... 08 100 zeros, find a / (b * c)

A / (b * c) = 0.0... 012 / (0.0... 025 * 0.0... 08) = 1.2 * 10 ^ (- 100) / [2.5 * 10 ^ (- 100) * 8 * 10 ^ (- 100)] = 1.2 / [2.5 * 8 * 10 ^ (- 100)] = 1.2 / [20 * 10 ^ (- 100)] = 1.2 / [2 * 10 ^ (- 99)] = (1.2 / 2) * 10 ^ 99 = 0.6 * 10 ^ 99 = 6 * 10 ^ 98a / (b * c) = 6, followed by 98 zeros

It is known that a = 0.00 012 (100 zeros), B = 0.00.. 08 (101 zeros) (1) a + B = (2) A-B = (3) a * b = (4) a / b=

(1)a+b=0.00 … 02 (100 zeros)
(2) A-B = 0.00... 04 (101 zeros)
(3)a*b=0.00 … 096 (202 zeros)
(4)a/b=1.5

0.0…… 025*0.0…… 024=0.0…… 06 50 0 50 0
0.0…… 025*0.0…… 024=0.0…… 06
50 zeros 50 zeros () zeros

97 0
adopt

What are the key points of the position and direction of unit 2 in the fourth grade of primary school mathematics volume II

You should be able to draw, recognize and draw, and memorize what the elf said

The answer to the fifth question on page 23 of three exercises in mathematics lesson 1 of grade 4 of primary school
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