NCERT Solutions for Class 4th Maths Chapter 9 Breaking the number of groups into tens — Multiplying Using 10s
Book page 138 Updated on2026-09-19
Q1.
Radha is packing cupcakes in boxes of 4. She has packed 18 boxes. How many cupcakes are there in the packed boxes? 10 boxes with 4 cupcakes in each contain 10 × 4 cupcakes = ______ cupcakes. 8 boxes with 4 cupcakes in each contain 8 × 4 cupcakes = ______ cupcakes. 18 boxes with 4 cupcakes in each contain ____ + ____ cupcakes = ______ cupcakes.
Answer
10 boxes with 4 cupcakes in each.8 more boxes with 4 cupcakes in each.
Why it happens: 18 boxes can be split into a friendly group of 10 and a group of 8. Nothing is lost, so the two parts are added back together.
Q2.
8 bamboo rods are needed to make a bullock cart. How many bamboo rods are needed for 23 carts? 20 carts with 8 rods in each need 20 × 8 rods = ________ rods. 3 carts with 8 rods in each need 3 × 8 rods = _________ rods.
Answer
20 carts, 8 bamboo rods for each.3 more carts, 8 bamboo rods for each.