Solve the following math problems, showing your work for each step.

To find the number before subtracting 20, we add 20.

$$170 + 20 = 190$$

To find the number before subtracting 5, we add 5.

$$190 + 5 = 195$$

To find the number before subtracting 5, we add 5.

$$195 + 5 = 200$$

The completed sequence is:
Top row: $220 \xrightarrow{-15} 205 \xrightarrow{-5} \boxed{\text{}200\text{}} \xrightarrow{-10} \boxed{\text{}190\text{}}$
Connection: $\boxed{\text{}190\text{}} \xrightarrow{-20} \boxed{\text{}170\text{}}$
Bottom row: $\boxed{\text{}200\text{}} \xrightarrow{-5} \boxed{\text{}195\text{}} \xrightarrow{-5} \boxed{\text{}190\text{}} \xrightarrow{-20} \boxed{\text{}170\text{}}$

Homework 06 April 2026

We need to find how many groups of 2 learners are in 24 learners.

$$24 \div 2$$

$$24 - 2 = 22$$ $$22 - 2 = 20$$ $$20 - 2 = 18$$ $$18 - 2 = 16$$ $$16 - 2 = 14$$ $$14 - 2 = 12$$ $$12 - 2 = 10$$ $$10 - 2 = 8$$ $$8 - 2 = 6$$ $$6 - 2 = 4$$ $$4 - 2 = 2$$ $$2 - 2 = 0$$

We subtracted 2, twelve times.

• Number of cars needed: $\boxed{\text{}12 \text{ cars}\text{}}$

Homework 07 April 2026

a) Find the number of marbles in each bag first and then find the total number

$$\text{Total marbles} = \text{Marbles per bag} \times \text{Number of bags}$$ $$\text{Total marbles} = 5 \times 4 = 20$$

• Total marbles (Way 1): $\boxed{\text{}20 \text{ marbles}\text{}}$

Here is the second way to find the total number of marbles:

$$\text{Total marbles} = 12 \text{ blue marbles} + 8 \text{ yellow marbles} = 20 \text{ marbles}$$

• Total marbles (Way 2): $\boxed{\text{}20 \text{ marbles}\text{}}$