Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
25 − 10 = ______
4 × 10 = ______
61 + 10 = ______
39 − 10 = ______
51 + 20 = ______
89 + 20 = ______
33 + 20 = ______
21 + 20 = ______
60 + 20 = ______
70 + 20 = ______
80 + 20 = ______
3 × 10 = ______
8 × 10 = ______
70 − 10 = ______
89 − 10 = ______
21 − 10 = ______
1 × 10 = ______
28 + 10 = ______
14 + 20 = ______
99 − 10 = ______
