L10 To round to the nearest whole number
Flying Start!
Lesson duration is: 25 minItems in this lesson
Flying Start!
Maths Vocabulary
Decimal, Decimal point, Tenths, Hundredths, Thousandths, Place value, Fraction, Percentage (%), Equivalent, Convert, Whole number, Rounding
This lesson you will need:
Pencil, Ruler, Eraser, iPad
12
13
12.3
The nearest whole number to 12.3 is ___
12
12.3 rounded to the nearest whole number is ___
12
12.3 is between ___ and ___
12
13
The nearest whole number to 12.3 is ___
12
12.3 rounded to the nearest whole number is ___
12
12.3 is between ___ and ___
12
13
The nearest multiple of 10 to 123 is ___
120
123 rounded to the nearest ten is ___
120
123 is between ___ and ___
120
130
Have a think
7
8
7.9
The nearest whole number to 7.9 is ___
8
7.9 rounded to the nearest whole number is ___
8
7.9 is between ___ and ___
7
8
Have a think
Tiny makes the number 4.3 using place value counters.
Use Tiny’s method to decide what integer 5.6 is closer to.
5.6 is six tenths away from 5 but four tenths away from 6
5.6 is closer to 6
Have a think
Use your preferred method to round each number
to the nearest whole number.
5.4
3.7
5
6
5.4
5
I need to subtract seven tenths to get to 3 but I need to add three tenths to get to 4
3.7 is closer to 4
4
Round 6.97 to the nearest whole number
6
7
Round 6.9 to the nearest whole number
What do you notice about your answers?
6.9
6.97
7
7
3
4
3.5
3.42
Rosie rounds 3.42 to the nearest whole number.
Rosie
Why does Rosie’s method work?
3
4
3.5
3.42
Rosie rounds 3.42 to the nearest whole number.
Rosie
Why does Rosie’s method work?
Have a think
Have a think
Round the numbers to the nearest whole number.
3.78
23.48
5.91
4
23
6
Miss Rose receives £70.42 for her birthday.
She has £339.63 in her bank account.
Can she afford to purchase a new television which costs £405?
70
340
+
=
£410
Yes
Dora thinks of a decimal number with 1 decimal place.
Dora
What number could Dora be thinking of?
Have a think
5.1
5.2
5.3
5.4
Has Tiny found all the possibilities?
Dora thinks of a decimal number with 1 decimal place.
Dora
What is the difference between the greatest and smallest possible numbers?
Have a think
5.1
5
5.2
5.3
5.4
5.5
4.9
4.8
4.7
4.6
4.5
0.9
