Grade 4 - Progress in Mathematics

Round to estimate the difference. Then subtract.

1. 
   18.7 2.
   24.2 3.
   3.43 4.
   62.19 5. $75.11
   
   13.9
   16.7
   2.84
   48.75
   27.25


2. 
   23.16 7.
   82.6 8.
   64.5 9.
   10 10.
   16
   
   15.9
   56.75
   56.48
   9.07
   15.5


3. 
   17 12.
   92.1 13.
   76 14.
   58 15.
   31.2
   
   7.4
   0.77
   8.32
   9.09
   0.99

Align and subtract.

16. 90.17
    9.07 17. 40.6
    2.04 18. 8.34
    0.5


17. 100
    55.5 20. 99
    0.09 21. 76.1
    75.06

Use the map on page 428.

22. How much closer to the 23. How much farther from Old
    Village is the Beacon than Farm is Black Rock than
    Black Rock? Sam’s Beach?


23. Is the route from Sam’s Beach 25. How many kilometers would
    to the Beacon longer or shorter you travel if you went from
    than the distance from Black Old Farm to the Beacon by
    Rock to Old Farm? How much way of Sam’s Beach and
    longer or shorter? the Village?

Subtract. Then check by adding.

26. 
    506.2 27.
    239.07 28.
    400.02 29.
    604
    
    175.35
    86.6
    0.8
    64.91

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