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Tuesday, 18 March 2014

maths addition and subtraction

143+78=157         456+101=557       235+87=244      135+49=184         335+48=383
-2    +2                 +1    -1                -3   +3               -1   +1                 -2    +2
145+80=157        457+100=557        232+90=244      134+50=184         333+50=383



158+37=195        236+199=335        248+54=306      456+299= 757      88+124=137      
+2   -2                 -1    +1                 +2    -2              -1     +1               +2  -2              
160+35=195        135+200=335        250+56=306       457+300=757      90+126=137

315+78=397        198+53=251         119+73=192       64+128=162         231+88=309
-2    +2                +2   -2                 +1    -1               -2   +2                 -2    +2
317+80=397        200+51=251         120+72=192       62+130=162         229+90=309



144+87=119        219+58=277         75+201=276        135+298=431      311+129=340
-3   +3                 +1   -1                  +1  -1                 -2   +2                      -1   +1                 

141+90=119        220+57=277         76+200=276        133+290=431      312+130=340     310+130=340

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