3A: Add/Subtract
3.4 + 2.5
5.9
7.5 x 8
58 ÷ 3 (remainder)
19 R1
Estimate
7.8 x 7 ≈ ?
56
When I add or subtract decimals, I must make sure that the __________ __________ are lined up.
6.72 + 8.4
15.12
8.6 x 10
86
658 ÷ 4 (remainder)
164 R2
Estimate
8.4 x 12.5 ≈ ?
round to whole numbers
104
The answer to a multiplication problem is called the ____________.
product
124.223 + 9.79
134.013
1.25 x 14
17.5
14.6
Estimate
44.7 ÷ 8.4 ≈ ?
round 44.7 to nearest 10, and 8.4 to nearest whole number.
5
The second number in a division problem is called the _________.
divisor
57.94 - 28.65
29.29
32.6 x 1.5
48.9
12.8 ÷ 3
4.266666666.....
Estimate
88.2 ÷ 1.6 ≈ ?
round 88.2 to nearest 10, and 1.6 to nearest whole number.
45
A wavy equal sign (≈) means __________ ________ _____.
approximately equal to
238.6 - 53.14
185.46
5.44 x 9.7
52.768
29.629 ÷ .3
98.763333333......
What is 43.9 ÷ 7.4 if I round both numbers to the nearest 10?
40 ÷ 10 = 4
thousands and ten-thousandths