estimate the answer to each of the following multiplications by first rounding each number to
1significant figure.
the rounded calculations should resemble those you have already worked out in question 2.
a) 37x219
b) 8.7 x 54
c) 66.34x 25.84
d) 0.1672 x 985.5
e) 65x349
f) 840.7 x 0.0155
g) 503x850
h) 0.6199x74.51
1) 0.0488x272.07
estimate the answer to each of the following multiplications by first rounding each number to
1significant figure.
a) 24x18.4
b) 8.234x5.0123
c) 9642 x 237
d) 0.123x862
e) 0.734x 26.382
f) 1530.0432
estimate these by rounding the first number in the division to the nearest multiple of what you
are dividing by.
a) 16.3+2
b) 23.6+3
c) 43.2435+5
d) 30.98-4
e) 13.127-7
f) 79.5+9
54.89
25.625
43.532