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
2 × 10 = ______
7 × 10 = ______
1 × 10 = ______
58 + 10 = ______
42 + 20 = ______
62 + 20 = ______
87 + 20 = ______
83 + 20 = ______
74 − 10 = ______
38 + 20 = ______
41 + 10 = ______
69 + 10 = ______
21 + 10 = ______
25 − 10 = ______
36 − 10 = ______
5 × 10 = ______
30 + 20 = ______
84 − 10 = ______
3 × 10 = ______
99 − 10 = ______
