400÷4+20×5
10+12÷3+20
70+(100-10×5)
0.25×3.2×4
37.8-16.4-13.6
1.8+0.2-1.8+0.2
93÷0.31÷3
2.5×7.5+2.5×2.5
63×10.1
6×3.9×1.25
35.72÷0.047÷0.32
0.138×6.4÷0.12
1÷0.25×(1.28÷3.2)
4.87×2.34+48.7×0.266
4.4×25
6.25÷0.25×0.6
68.04÷(0.21×3.6)
0.486+0.01÷3.99
19.75-6.45-3.55
2.02×(1.027÷0.26)
2.5×1.25×0.32