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
29 + 20 = ______
5 × 10 = ______
58 + 20 = ______
46 + 20 = ______
74 + 10 = ______
86 − 10 = ______
45 − 10 = ______
7 × 10 = ______
75 + 20 = ______
89 + 20 = ______
52 − 10 = ______
23 + 20 = ______
32 − 10 = ______
8 × 10 = ______
58 + 10 = ______
1 × 10 = ______
67 − 10 = ______
9 × 10 = ______
3 × 10 = ______
6 × 10 = ______
