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
99 − 10 = ______
51 − 10 = ______
63 + 10 = ______
5 × 10 = ______
60 + 20 = ______
6 × 10 = ______
55 + 10 = ______
54 + 20 = ______
70 + 10 = ______
7 × 10 = ______
78 + 20 = ______
2 × 10 = ______
1 × 10 = ______
74 − 10 = ______
9 × 10 = ______
20 + 10 = ______
30 + 20 = ______
88 − 10 = ______
49 − 10 = ______
68 − 10 = ______
