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472+503
=472+500+3
=972+3
=975
143+(57+26)
=143+57+26
=200+26
=226
78-46-14
=78-(46+14)
=78-60
=18
32×125
=4×8×125
=4×(8×125)
=4×1000
=4000
3×125×8
=3×(125×8)
=3×1000
=3000
47+51+49+53
=(47+53)+(51+49)
=100+100
=200
99+(38+101)
=99+101+38
=200+38
=238
125×64
=125×8×8
=1000×8
=8000
500-99-1-98-2
=500-(99+1+98+2)
=500-200
=300
340+498
=340+500-2
=840-2
=838
=472+500+3
=972+3
=975
143+(57+26)
=143+57+26
=200+26
=226
78-46-14
=78-(46+14)
=78-60
=18
32×125
=4×8×125
=4×(8×125)
=4×1000
=4000
3×125×8
=3×(125×8)
=3×1000
=3000
47+51+49+53
=(47+53)+(51+49)
=100+100
=200
99+(38+101)
=99+101+38
=200+38
=238
125×64
=125×8×8
=1000×8
=8000
500-99-1-98-2
=500-(99+1+98+2)
=500-200
=300
340+498
=340+500-2
=840-2
=838
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