Test: Arithmetic IV - Ambitious

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Question 1:   Solve: 2.57+3.9
6.47
0.647
64.7
647
Question 2:   Solve: 27.5( 7.5+0.5 )
195
19.5
20.5
1.95
Question 3:   Solve: 53 1 3
2 2 3
2 1 3
1 2 3
1 1 3
Question 4:   Solve: 571×38+38×629
456
45600
4560
456000
Question 5:   Solve: 4 9 ×5 3 4
2 4 9
2 5 9
2 3 9
2 2 9
Question 6:   Solve: 28.6:0.027.2:0.01
0.71
7.1
710
71
Question 7:   Solve: 6 7 22 +5 5 11 :( 4 )
7 15 22
4 19 22
4 21 22
5 21 22
Question 8:   Solve: 0:3 1 7 4 2 5 ×1.2
52.8
5.28
52.8
5.28
Question 9:   Solve: 5.4:0.10.06×0.03
5.39982
539.982
53.9982
539982
Question 10:   Solve: 5.505:( 5 8 )+178.5:7
34.3308
34.308
343.08
3.4308