Question

а) 235,6*5+652,1*2,2 б) 768,33*4+1268,4*0,5+562,28*0,25 в) 156,12*15+31.05*36-15,8:4 г) 17,21*8-18,32:0,2-21,5*2

Answer 1

A)2612,62
Б)3848.09
В)3455.65
Г)3,08

Answer 2

А)235,6*5+652,1*2,2=1178+1434,62=2612,62
б)768,33*4+1268,4*0,5+562,28*0,25=3073,32+634,2+140,57=3848,09
в)156,12*15+31,05*36-15,8:4=2341,8+1117,8-3,95=3455,65
г)17,21*8-18,32:0,2-21,5*2=137,68-91,6-43=2,4
проверено калькулятором)

Answer 3

Let's solve each expression step by step:

а) 235.6 * 5 + 652.1 * 2.2

Step 1: Multiply the numbers. 235.6 * 5 = 1178 652.1 * 2.2 = 1434.62

Step 2: Add the results together. 1178 + 1434.62 = 2612.62

So, the result of (а) is 2612.62.

б) 768.33 * 4 + 1268.4 * 0.5 + 562.28 * 0.25

Step 1: Multiply the numbers. 768.33 * 4 = 3073.32 1268.4 * 0.5 = 634.2 562.28 * 0.25 = 140.57

Step 2: Add the results together. 3073.32 + 634.2 + 140.57 = 3848.09

So, the result of (б) is 3848.09.

в) 156.12 * 15 + 31.05 * 36 - 15.8 ÷ 4

Step 1: Multiply the numbers. 156.12 * 15 = 2341.8 31.05 * 36 = 1117.8

Step 2: Divide the number. 15.8 ÷ 4 = 3.95

Step 3: Subtract the result. 2341.8 + 1117.8 - 3.95 = 3455.65

So, the result of (в) is 3455.65.

г) 17.21 * 8 - 18.32 ÷ 0.2 - 21.5 * 2

Step 1: Multiply the numbers. 17.21 * 8 = 137.68 21.5 * 2 = 43

Step 2: Divide the number. 18.32 ÷ 0.2 = 91.6

Step 3: Subtract the results. 137.68 - 91.6 - 43 = 3.08

So, the result of (г) is 3.08.