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 = ______
16 + 20 = ______
32 − 10 = ______
48 + 10 = ______
32 + 20 = ______
9 × 10 = ______
5 × 10 = ______
76 + 20 = ______
18 + 20 = ______
46 − 10 = ______
70 − 10 = ______
8 × 10 = ______
38 + 10 = ______
57 + 20 = ______
6 × 10 = ______
91 − 10 = ______
7 × 10 = ______
17 + 10 = ______
19 + 20 = ______
71 + 20 = ______
