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
11 + 20 = ______
1 × 10 = ______
93 − 10 = ______
70 + 10 = ______
58 + 20 = ______
24 − 10 = ______
46 + 10 = ______
3 × 10 = ______
45 − 10 = ______
70 − 10 = ______
54 + 10 = ______
72 + 20 = ______
4 × 10 = ______
60 + 20 = ______
34 + 10 = ______
60 − 10 = ______
48 + 20 = ______
8 × 10 = ______
59 + 20 = ______
9 × 10 = ______
