You can't change present to past without changing words or adding words. Some irregular verb have the same form for past and present eg cut. But unless you add a time word(s) then the sentence is the same.
I cut the cake.
I cut the cake (last night).
To convert a present tense sentence to past tense, you generally change the verb to its past tense form. For regular verbs, this involves adding '-ed' to the base form of the verb. For irregular verbs, the past tense form must be memorized. It is also important to make any necessary adjustments to the sentence structure for tense consistency.
Adding more turns of wire to the electromagnet will make it stronger without changing the applied voltage.
You can simply end the sentence with "BC" without adding any punctuation.
Associative Property
Associative property
Adding.
Students were prohibited from adding reactants to chemical experiments without an experienced supervisor.
Example: "i saw her crumple the paper as she walked out of the room."
"Stick"'s present tense is "sticking," you just have to say it in a sentence like:She is sticking the twig into the log's hole.Lots of words become present tense just by adding "ing" to the end of it.
Cut it off and/or allow it to grow in without adding (too many) products or changing it's texture or color.
The present participle is adding.
It is the Commutative Property which states that changing the order when adding numbers does not affect the result.