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Number and Algebra, NAP-B2-6

Which one of these has the same value as  `14 xx 2`?

`10 + 4 + 2` `10 xx 2 + 4` `10 xx 2 + 2` `10 xx 2 + 8`
 
 
 
 
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`10 xx 2 + 8`

Show Worked Solution
`14 xx 2` `=28`
`10 xx 2 +8` `=20 +8`
  `=28`

Filed Under: Number and Place, Number and Place Value Tagged With: Band 4, smc-3083-30-Multiplication, smc-690-30-Multiplication

Number and Algebra, NAP-C2-31

The value of  `39 xx 61`  is closest to

`1800` `1900` `2400` `2500`
 
 
 
 
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`2400`

Show Worked Solution

`text(An estimate that makes the calculation easier:)`

`39 xx 61` `~~40 xx 60`
  `~~2400`

Filed Under: Number and Place, Number and Place Value Tagged With: Band 8, smc-3083-30-Multiplication, smc-690-30-Multiplication

Number and Algebra, NAP-H2-7

`3 xx` 
 
 `= 51`

 
What number makes the above number sentence correct?

`17` `27` `48` `153`
 
 
 
 
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`17`

Show Worked Solution
`3 xx n` `= 51`
`n` `= 51/3`
  `= 17`

Filed Under: Number and Place, Number and Place Value Tagged With: Band 4, smc-3083-30-Multiplication, smc-690-30-Multiplication

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