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 = ______
65 − 10 = ______
54 − 10 = ______
74 + 20 = ______
23 − 10 = ______
24 + 20 = ______
3 × 10 = ______
9 × 10 = ______
78 + 10 = ______
67 − 10 = ______
34 + 20 = ______
45 + 20 = ______
55 − 10 = ______
23 + 20 = ______
8 × 10 = ______
86 − 10 = ______
7 × 10 = ______
54 + 10 = ______
4 × 10 = ______
33 + 10 = ______
