TENS AND ONES

Facts about numbers: 0,1,2,3,4,5,6,7,8,9 are one digit numbers. 10,11,12,13,…………………,95,96,97,98,99 are two digit numbers. Smallest one digit number is 0. Biggest one digit number is 9. Smallest two digit number is 10. Biggest two digit number is 99.

ABACUS

Write how many tens and ones for the following numbers? = 3 tens + 5 ones = 35 = 4 tens + 2 ones = 42 = 1 tens + 3 ones = 13

PLACE VALUE 1) 27 2) 69 Place value of 7 is 1’s. Place value of 9 is 1’s. Place value of 2 is 10’s. Place value of 6 is 10’s. So, 20 + 7=27 So, 60 + 9=69 3) 86 4) 31 Place value of 6 is 1’s . Place value of 1 is 1’s. Place value of 8 is 10’s. Place value of 3 is 10’s. So, 80 + 6 = 86 So, 30 + 1 = 31

Count the notes and coins write how many ones and tens have? = 34 It has 3 tens and 4 ones. = 26 It has 2 tens and 6 ones

=15 =15 It has 1 tens and 5 ones. = It has 5 ones = 16 It has 1 tens and 6 ones.

Addition 1) 15 + 12 2) 19 + 30 3) 47 + 32 15 19 47 12 30 32 27 49 79 4) 25 + 41 5) 56 + 50 6) 72 + 26 25 56 72 41 50 26 66 106 98

Subtraction 79 – 45 2) 96 – 21 3) 63 - 11 79 96 63 45 21 11 34 75 52 4) 85 – 30 5) 62 – 32 6) 94 – 52 85 62 94 30 32 52 55 30 42