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
3 × 10 = ______
2 × 10 = ______
5 × 10 = ______
42 + 10 = ______
12 + 20 = ______
36 − 10 = ______
9 × 10 = ______
36 + 10 = ______
83 − 10 = ______
4 × 10 = ______
86 + 10 = ______
25 + 10 = ______
77 − 10 = ______
20 + 20 = ______
55 + 20 = ______
66 − 10 = ______
41 − 10 = ______
59 + 20 = ______
80 + 20 = ______
86 + 20 = ______
