How to help your child with Class 5 Maths

In Class 5, Maths covers 12 units, starting with Numbers up to One Lakh, Adding and Subtracting Large Numbers, Multiplication and Division and Factors and Multiples.

This guide shows what is taught, the mistakes children commonly make and a short routine you can follow at home. Every unit links to a free picture lesson and quiz on MangoMindz.

What your child learns in Class 5 Maths

MangoMindz teaches Class 5 Maths in 12 units written to NCERT learning outcomes. Each unit has its own page with outcomes, key words and questions to ask at home.

Common mistakes to watch for

These are mistakes children often make in this class, with a simple way to correct each one.

Commas are placed every three digits from the right (international system), so 100000 is written as 100,000.
In the Indian system, we group the last three digits (hundreds, tens, ones), then the next two (thousands, ten-thousands), then the next (lakhs). So 1,00,000. (Numbers up to One Lakh)
When adding, you can add from left to right without regrouping.
Always start from the ones column. Regrouping changes the next column, so you must go right to left. (Adding and Subtracting Large Numbers)
When multiplying by the tens digit, they forget to put a zero in the ones place of the second partial product.
Remind them: 234 × 10 = 2340, so the second partial product must end in 0. (Multiplication and Division)
A factor must be smaller than the number, so 12 is not a factor of 12.
Every number has itself as a factor because 1 × number = number. (Factors and Multiples)
Equivalent fractions are the same fraction, just written differently.
Show with strips that they cover the same length, so they are equal in value. (Fractions)
0.3 is the same as 3/100 (three hundredths).
Show a 10x10 grid. Shade 3 out of 10 parts (one row). That is 3/10, which is 0.3. Shading 3 out of 100 parts is 3/100, which is 0.03. (Decimals)
The longer the lines, the bigger the angle.
Angle size depends on the turn, not the length of the lines. Show two angles with same turn but different arm lengths. (Angles and Shapes)
Perimeter is the space inside the shape.
Perimeter is the distance around the outside. Walk around the shape to feel it. (Perimeter, Area and Volume)

A 10-minute daily routine

Short, regular practice is easier to keep up than a long weekend session. One routine that fits into a busy evening:

  • Minutes 1–2, warm-up: ask one quick question aloud (see the list below) and let your child explain how they got the answer.
  • Minutes 3–7, learn: do one short lesson part on MangoMindz: the picture lesson is read aloud, then a quick check.
  • Minutes 8–9, use real things: repeat the idea with coins, spoons, rotis, a ruler or the clock at home.
  • Minute 10, reflect: ask “What was tricky today?” and look at one common mistake from this guide together.

Try this at home

  • Numbers up to One Lakh: Place a number in the chart and read it
  • Adding and Subtracting Large Numbers: Add 45,678 + 32,456 in columns, carrying 1 into the tens, hundreds and thousands
  • Multiplication and Division: 234 × 12 with partial products shown
  • Factors and Multiples: Find all factors of 12 using factor pairs
  • Fractions: Show 1/2 = 2/4 = 3/6 using fraction strips
  • Decimals: Shade 3 out of 10 parts, write fraction and decimal

Quick questions to ask aloud

Ask one a day. Let your child answer before you open the answer.

  1. How is 1,00,000 read in the Indian system? (One lakh / One hundred thousand / Ten thousand / One thousand)
    Show answerOne lakh. In the Indian system, 1,00,000 is called one lakh.
  2. What is 45,678 + 32,456?
    Show answer78134. Add from the ones: 8+6=14, write 4 carry 1. Tens: 7+5+1=13, write 3 carry 1. Hundreds: 6+4+1=11, write 1 carry 1. Thousands: 5+2+1=8. Ten-thousands: 4+3=7. So 78,134.
  3. Multiply: 234 × 12
    Show answer234 × 2 = 468, 234 × 10 = 2340. Add them: 468 + 2340 = 2808.
  4. How many factors does the number 16 have?
    Show answerThe factors of 16 are 1, 2, 4, 8, and 16. That is 5 factors.
  5. Which fraction is equivalent to 1/2? (2/4 / 1/3 / 2/3)
    Show answer1/2 and 2/4 are the same because if you cut a pizza into 4 slices and take 2, you have half the pizza.

Key words this year

lakh
One hundred thousand. We write it as 1,00,000.
place value
What a digit is worth because of where it sits: lakhs, ten-thousands, thousands, hundreds, tens or ones.
regroup
To trade 10 ones for 1 ten, or 10 tens for 1 hundred, and so on, when adding or subtracting.
sum
The answer you get when you add two numbers.
product
The answer you get when you multiply two numbers.
quotient
The answer you get when you divide.
factor
A number that divides another number exactly, leaving no remainder. For example, 3 is a factor of 12 because 12 ÷ 3 = 4.
multiple
The answer you get when you multiply a number by a whole number. For example, multiples of 3 are 3, 6, 9, 12, ...
fraction
A part of a whole, like one slice of a pizza.
numerator
The top number of a fraction; it tells how many parts we have.
decimal
A way to write a fraction using a dot (.) to separate the whole part from the part less than one.
decimal point
The dot (.) that separates the whole number part from the fractional part.

More help

Frequently asked questions

What is taught in Class 5 Maths?

12 units: Numbers up to One Lakh; Adding and Subtracting Large Numbers; Multiplication and Division; Factors and Multiples; Fractions; Decimals; Angles and Shapes; Perimeter, Area and Volume; Measurement and Conversion; Time and the 24-Hour Clock; Money in Daily Life; Patterns and Data.

What mistakes do Class 5 children make in Maths?

Commas are placed every three digits from the right (international system), so 100000 is written as 100,000. Fix: In the Indian system, we group the last three digits (hundreds, tens, ones), then the next two (thousands, ten-thousands), then the next (lakhs). So 1,00,000. (Numbers up to One Lakh) When adding, you can add from left to right without regrouping. Fix: Always start from the ones column. Regrouping changes the next column, so you must go right to left. (Adding and Subtracting Large Numbers) When multiplying by the tens digit, they forget to put a zero in the ones place of the second partial product. Fix: Remind them: 234 × 10 = 2340, so the second partial product must end in 0. (Multiplication and Division)

How much time should a Class 5 child spend on Maths at home?

About 10 minutes on most days is a good start: a quick warm-up question, one short lesson part and a minute to talk about what was tricky. Short, regular practice is easier to keep up than long sessions.

Is there a free app for Class 5 Maths?

Yes. MangoMindz is free and has no ads. Every unit of Class 5 Maths has picture lessons read aloud, quick checks and a quiz, and parents can follow progress on a PIN-protected dashboard. No credit card is needed.

Start Class 5 Maths free

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