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
46 + 20 = ______
20 + 10 = ______
6 × 10 = ______
7 × 10 = ______
89 − 10 = ______
8 × 10 = ______
25 + 20 = ______
54 + 20 = ______
29 − 10 = ______
44 − 10 = ______
45 + 20 = ______
24 + 10 = ______
31 − 10 = ______
88 + 20 = ______
42 − 10 = ______
79 + 20 = ______
66 − 10 = ______
58 + 10 = ______
51 + 10 = ______
3 × 10 = ______
