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
34 + 20 = ______
70 + 10 = ______
78 + 20 = ______
9 × 10 = ______
1 × 10 = ______
24 + 20 = ______
19 + 10 = ______
2 × 10 = ______
30 − 10 = ______
31 − 10 = ______
28 + 10 = ______
34 − 10 = ______
86 − 10 = ______
67 + 20 = ______
3 × 10 = ______
58 + 10 = ______
4 × 10 = ______
52 + 10 = ______
89 − 10 = ______
6 × 10 = ______
