Page 43 - Math Skill - 2

Subtraction of 2-digit Numbers 41

HOTS
Fill in the blanks of each crossword to make the subtraction equation true.

74 – 28 = – 12 =

– – –

23 32 – = 18

= = = =

21 51 – 23 =

Word Stock

Difference Decrease Reduce Subtract Fewer Check Take-away Borrow

Activity

Objective : To build the concept

of 2-digit subtraction
without regrouping using
abacus. T O

Material Required : An abacus with 2 rods, dice and coloured beads

Procedure : 1. The teacher will divide all the students in pairs.

2. The first student will roll the dice twice and build a number.
For example, 45.

3. The second student will roll the dice twice and build another

number. For example, 22.

4. The students will represent the minuend 45 using coloured
beads on the abacus.

5. In the ones rod, the students will take away 2 beads. They will

then count the remaining beads, that is, 3.

6. In the tens rod, the students will take away 2 beads. They will
then count the remaining beads, that is, 2.

7. The number of beads remaining on the abacus is the result.