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Some more examples:

a. 2 tens + 12 ones b. 4 tens + 26 ones

= 2 tens + 10 ones + 2 ones = 4 tens + 20 ones + 6 ones

= 2 tens + 1 ten + 2 ones = 4 tens + 2 tens + 6 ones
= 3 tens + 2 ones = 6 tens + 6 ones

Exercise 2D

1. write the numbers as tens and ones.

a. 27 = ____ tens + ____ ones b. 48 = ____ tens + ____ ones

c. 60 = ____ tens + ____ ones d. 75 = ____ tens + ____ ones

e. 99 = ____ tens + ____ ones f. 47 = ____ tens + ____ ones

2. regroup the following ones into tens and ones.

a. 16 ones = ____ tens + ____ ones b. 28 ones = ____ tens + ____ ones

c. 44 ones = ____ tens + ____ ones d. 57 ones = ____ tens + ____ ones

e. 70 ones = ____ tens + ____ ones f. 81 ones = ____ tens + ____ ones

3. regroup the given tens and ones.

10
a. 5 tens + 16 ones = ____ tens + ____ ones + ____ ones
5
= ____ tens + ____ tens + ____ ones

= ____ tens + ____ ones

b. 4 tens + 25 ones = ____ tens + ____ ones + ____ ones
4
5
= ____ tens + ____ tens + ____ ones

= ____ tens + ____ ones

c. 7 tens + 27 ones = ____ tens + ____ ones

d. 4 tens + 35 ones = ____ tens + ____ ones

e. 1 ten + 55 ones = ____ tens + ____ ones

36 36 Mathematics 2
Mathematics 2