Doubling - 45 add 43, Make 100 - 98 plus 45, Partition 9 - 63 add 9, Make 10 - 153 + 17, Round to the next 10 (and doubles) - 148 add 75, No work - The sum of 293 and 106, Partition - The total of 54 and 78, Round and adjust - 245 plus 98, Make next 10 then add the rest - 157 + 26,

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