Rounding
Round 45.6 to the nearest whole number
46
273
+ 347
620
30 x 40
1200
448/4
112
How can you check if a number is divisible by 10?
The number ends in a 0
Round 34.92 to 1 decimal place
34.9
431
- 145
286
The product of 12 and 20
240
130/10
13
How can you check if a number is divisible by 5?
The number ends in a 5 or 0
Round 0.876 to 1 decimal place
0.9
12.5
+ 4.6
17.1
1.4 x 10
14
245/100
2.45
How can you check if a number is divisible by 3?
If the digit sum is a multiple of 3.
You add the digits and check if the sum is in the three times table
Round 7.846 to 2 decimal places
7.85
13.98
- 6.09
7.89
1.09 x 100
109
36/5
7.2
Is 342 divisible by 3?
yes as 3+4+2 = 9 which is divisible by 3
Round 0.083 to 2 decimal places
0.08
0.8
- 1.2
- 0.4
0.2 x 30
6
165/4
41.25
Is 312 a multiple of 4? Prove it
Yes because the two last digits (12) is a multiple of 4