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Date: ____________

Work out an estimate for each calculation:

a) [tex]$67 + 47$[/tex]

b) [tex]$81 - 38$[/tex]

c) [tex]$131 + 450$[/tex]

d) [tex]$137 + 408$[/tex]

e) [tex]$292 - 64$[/tex]

f) [tex]$525 - 39$[/tex]

Sagot :

GinnyAnsweridn
Sure, let's work on estimating each of the given calculations step-by-step.

### a) [tex]\( 67 + 47 \)[/tex]
To estimate this calculation, we add the two numbers:
[tex]\[ 67 + 47 = 114 \][/tex]

### b) [tex]\( 81 - 38 \)[/tex]
To estimate this calculation, we subtract the second number from the first:
[tex]\[ 81 - 38 = 43 \][/tex]

### c) [tex]\( 131 + 450 \)[/tex]
To estimate this calculation, we add the two numbers:
[tex]\[ 131 + 450 = 581 \][/tex]

### d) [tex]\( 137 + 408 \)[/tex]
To estimate this calculation, we add the two numbers:
[tex]\[ 137 + 408 = 545 \][/tex]

### e) [tex]\( 292 - 64 \)[/tex]
To estimate this calculation, we subtract the second number from the first:
[tex]\[ 292 - 64 = 228 \][/tex]

### f) [tex]\( 525 - 39 \)[/tex]
To estimate this calculation, we subtract the second number from the first:
[tex]\[ 525 - 39 = 486 \][/tex]

Therefore, the estimates for each calculation are:
- [tex]\( 67 + 47 = 114 \)[/tex]
- [tex]\( 81 - 38 = 43 \)[/tex]
- [tex]\( 131 + 450 = 581 \)[/tex]
- [tex]\( 137 + 408 = 545 \)[/tex]
- [tex]\( 292 - 64 = 228 \)[/tex]
- [tex]\( 525 - 39 = 486 \)[/tex]
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